描述
EP — NISSAN Universal Joint | GUN Series OEM Replacement
Precision-engineered NISSAN universal joint replacements covering the complete GUN series — from GUN25 through GUN48. Each NISSAN universal joint is manufactured to exact OEM dimensional tolerances, with cross-reference to original Nissan part numbers, Koyo, and Matsuba references. Built for Nissan passenger vehicles, Navara pickup trucks, Hardbody models, and commercial drivetrains operating across Colombia and Latin America.
1. NISSAN Universal Joint — GUN Series Technical Specifications
The table below provides the full dimensional and cross-reference data for EP NISSAN universal joint replacements. Column definitions: FIG = yoke figure type (A = standard fork yoke; B = flange yoke; I = industrial/heavy-duty); D = trunnion journal diameter (mm); O = outside bearing cup diameter (mm); L = overall cross length (mm); ORIGINAL NO = Nissan OEM part number; KOYO = JTEKT Koyo aftermarket reference; MATSUBA = Matsuba aftermarket reference. Consult your vehicle’s VIN-specific parts list to confirm applicability before ordering a NISSAN universal joint replacement.
| 如图 | 零件编号 | D（毫米） | O (mm) | L（毫米） | ORIGINAL NO | KOYO | MATSUBA |
|---|---|---|---|---|---|---|---|
| B | GUN25 | 32 | 64 | — | 37125-01J25 | — | — |
| 一个 | GUN26 | 23.82 | — | 61.3 | 37125-11975 | N2461 | UJ110 |
| B | 枪27 | 25 | 40 | — | 37125-14627 | N2563 | UJ111 |
| B | GUN28 | 20.01 | 35 | — | 37125-18025 | N2057 | — |
| B | 枪29 | 28 | 53 | — | 39625-21025 | N2880BA | UJ112 |
| 一个 | GUN30 | 30.188 | — | 92.08 | 37125-85461 | N3092 | — |
| I | GUN31 | 32 | — | 107 | 37125-50001 | N32111 | UJ114 |
| 一个 | GUN32 | 35.5 | — | 119.2 | 37125-58026 | N36119 | UJ115 |
| 一个 | GUN33 | 43 | — | 128 | 37125-99901 | ND43128 | UJ119 |
| B | GUN34 | 25 | 52 | — | 37125-76025 | N2580 | UJ113 |
| 一个 | GUN36 | 25 | — | 77.6 | 37125-4101 (6510) | NP2578 | UJ120 |
| B | GUN38 | 26 | 45.6 | — | 37125-68200 | — | UJ121 |
| I | GUN41 | 43 | — | 135.5 | 37125-90128 | ND43142 | UJ120 |
| I | GUN43 | 55.1 | — | 163.8 | 37125-90027 | ND43128B | UJ125 |
| 一个 | GUN44 | 20.5 | — | 56.6 | 48155-99000 | — | UJ118 |
| 一个 | GUN45 | 20.7 | — | 52.4 | 37125-H8500 | — | — |
| B | GUN46 | 27 | 46 | — | 37126-01G25 | — | UJ124 |
| 一个 | GUN47 | 27 | — | 81.75 | 37125-25025 | — | — |
| 一个 | GUN48 | 27 | — | 81.75 | 37125-7F025 | — | — |
Note: FIG codes — A: standard fork yoke; B: flange yoke; I: industrial/heavy-duty yoke. Dash (—) indicates that dimension or cross-reference is not applicable or not available for that part number. Always verify using your vehicle’s OEM part number before placing a NISSAN universal joint replacement order.
2. What Is a NISSAN Universal Joint?
A NISSAN universal joint is a dedicated OEM-specification cross kit designed for the driveline systems of Nissan vehicles, engineered to meet the original factory tolerances in terms of cross body diameter, overall length, and bearing cup configuration. Like all universal joints in automotive applications, it serves the fundamental role of transmitting rotating torque between two shafts that are not perfectly aligned — most commonly between the gearbox output shaft and the rear differential pinion via the propeller (driveshaft) assembly. This coupling must handle constant torque delivery while accommodating the up-and-down movement of the rear axle as the vehicle travels over uneven road surfaces.
Nissan vehicles are widely used throughout Colombia, particularly the Nissan Navara and the Nissan Hardbody (also known as the D21 or Frontier in some markets), both of which have significant populations in rural and semi-urban areas of the Andean region, the coastal lowlands, and the Llanos Orientales. The combination of demanding off-road terrain, tropical humidity, and heavy load cycles places exceptional demands on driveline components — making NISSAN universal joint quality, dimensional accuracy, and bearing material selection critical factors for long service intervals and low total operating cost.
The EP series NISSAN universal joint range covers the full GUN series part number family, which is the standard numbering scheme used by OEM and aftermarket suppliers worldwide for Nissan-application cross kits. Cross-reference numbers for Koyo and Matsuba — two of the leading aftermarket bearing manufacturers in the Japanese automotive supplier ecosystem — are included for each GUN part number, allowing workshops and distributors to identify the correct replacement regardless of their existing reference system.
3. 五大产品优势
OEM-Level Dimensional Precision
Every EP NISSAN universal joint is machined to tolerances that replicate the original factory specification. The trunnion diameter (D), outside bearing cup diameter (O), and overall cross length (L) are all held to strict limits verified by CMM inspection, ensuring a drop-in fit across Nissan driveshaft yokes without any rework. This precision eliminates the angular play that develops when an undersized or out-of-round cross kit is installed, and preserves the original phasing geometry of the driveshaft assembly.
Full GUN Series Coverage with Cross-Reference
The complete GUN series — spanning GUN25 through GUN48 — is stocked under one product family, simplifying procurement for workshops and distributors who service a mixed fleet of Nissan trucks and passenger vehicles. Each part number includes the verified OEM Nissan part number, Koyo (JTEKT) reference, and Matsuba reference, so your technician can confirm the correct part regardless of which reference system their workshop software uses. This breadth makes EP a reliable single-source supplier for all NISSAN universal joint gun series requirements.
Case-Hardened Alloy Steel Spider Body
The cross (spider) body is forged and machined from low-carbon alloy steel (equivalent to 20CrMnTi), then carburized and case-hardened to achieve a surface hardness of 58–62 HRC at the trunnion journal. This heat-treatment process creates a hard wear-resistant outer shell while retaining a tough, ductile core — exactly the properties needed to withstand the repetitive shock loading generated by Nissan Navara universal joint and Hardbody driveshafts encountering potholes, off-road obstacles, and rough Colombian road surfaces.
Sealed Needle Bearings with Extended Grease Life
Needle rollers made from high-carbon chromium bearing steel (GCr15 / SAE 52100) are fitted in each bearing cup, retained by precision-formed cages and protected by oil-resistant nitrile (NBR) seals. The seal design prevents ingress of road dirt, water, and salt spray — a critical requirement for NISSAN Navara universal joint replacement parts used in the humid coastal regions of Colombia and throughout the rainy seasons encountered in the interior highlands. Grease passages in the trunnion body allow optional re-lubrication where specified by the vehicle manufacturer.
ISO 9001-Certified Manufacturing Traceability
Production under ISO 9001:2008 quality management — verified by accredited third-party auditors — ensures that each batch of NISSAN universal joints carries full material traceability from raw steel through machining, heat treatment, and final assembly. Dimensional verification records are maintained for each lot, and random sampling of finished cross kits is performed using three-axis CMMs, surface roughness testers, and microhardness testers before shipment authorization. This documented quality system underpins the warranty support and technical claims made for every EP NISSAN universal joint product.
4. Universal Joint Working Principle in Nissan Drivelines
Understanding the universal joint working principle helps vehicle owners and fleet managers make informed decisions about replacement intervals and part selection. In a Nissan rear-wheel-drive vehicle, the engine’s torque travels from the transmission through a one-piece or two-piece propeller shaft to the rear differential. This shaft must accommodate the vertical travel of the rear suspension, meaning its angle relative to the gearbox output shaft changes continuously as the vehicle moves. The universal joint solves this problem by allowing the shaft angle to vary while maintaining continuous, uninterrupted torque transmission.
The mechanical structure at the heart of every NISSAN universal joint is the spider — a cross-shaped trunnion with four journals arranged at 90-degree intervals. Each journal seats inside a bearing cup packed with needle rollers, and the two opposing pairs of bearing cups are held within yoke ears on either end of the joint. As the input yoke rotates, the spider pivots on one pair of bearing cups, while the output yoke simultaneously pivots on the other pair. This double-pivot mechanism allows the joint to transmit rotation smoothly through shaft angles typically up to 8–12 degrees for Nissan driveshaft applications.
One known characteristic of Cardan-type universal joints — including all GUN series NISSAN universal joint designs — is that when operating at a non-zero angle, the output shaft velocity fluctuates twice per revolution relative to the constant input speed. This is called the second-order velocity variation, and it generates vibration that can be felt as a shudder or buzz through the vehicle body at certain speeds and load conditions. Nissan engineers address this by carefully setting the phasing angle between the front and rear universal joints of the propeller shaft so that their velocity variations cancel each other, restoring smooth output rotation.
When a NISSAN universal joint begins to wear — typically due to bearing surface pitting, loss of seal integrity, or lubricant contamination — the phasing balance is disrupted, and vibration returns. This is one of the first signs that a universal joint replacement is overdue. Additional symptoms include a clunking noise on take-up of drive, a clicking or grinding sound during acceleration, and visible radial play in the yoke when inspected by hand with the driveshaft stationary.
5. Material Specification & Construction Details
Spider (Cross) Body: Each NISSAN universal joint spider is cold-forged and precision-machined from 20CrMnTi or equivalent low-carbon chromium-manganese alloy steel. After rough machining, the cross undergoes carburizing followed by oil quench and low-temperature tempering to achieve a case depth of 0.8–1.2 mm and a surface hardness of 58–62 HRC while retaining a core hardness of 35–42 HRC. This ensures that the trunnion journals can withstand the cyclic contact stresses imposed by needle rollers in service without case spalling or core fracture — the two most common failure modes in under-specified universal joint crosses.
Bearing Cups: Bearing cups are deep-drawn or turned from low-alloy case-hardening steel (equivalent to 20Cr or 15CrMn), then precision-ground on the bore and end face to achieve consistent needle contact geometry. The cup bore is held to a diameter tolerance of +0.000 / –0.010 mm to ensure correct needle roller fit. For the nissan gun metal universal joint variants, cup walls are thickened relative to lighter passenger-car designs to increase radial load capacity for the Hardbody and Navara’s higher GVW duty cycles.
Needle Rollers: Needle rollers are manufactured from 100Cr6 (SAE 52100) high-carbon chromium bearing steel, hardened to 62–66 HRC and ground to a diameter variation within 0.001 mm across the roller array. This uniformity ensures equal load distribution among rollers, preventing the premature spalling that results from roller diameter spread.
Seals and Retaining Rings: Oil-resistant nitrile rubber (NBR) seals with a hardness of 70–75 Shore A are fitted to each bearing cup, protecting the needle array from road contamination, water ingress, and chemical exposure. Snap rings (circlips) are manufactured from spring steel with consistent spring-back properties, ensuring that bearing cups are positively retained within the yoke ears without axial play regardless of temperature cycling.
6. 应用场景
NISSAN universal joint replacements from the GUN series serve a broad cross-section of vehicle types and operational environments. Below are the primary scenarios where proper part selection and installation are critical.
Nissan Navara / Frontier Driveshaft
The Nissan Navara (sold as the Nissan Frontier in some markets) is one of the most widely used light-commercial pickup trucks throughout Colombia’s rural provinces, particularly in the agricultural zones of Huila, Meta, and Córdoba. The Navara universal joint must endure off-road driving, tow loads, and high ambient temperatures while maintaining precise driveshaft alignment. GUN30, GUN32, and GUN33 are typical fitments for Navara driveshaft positions, depending on the generation and axle configuration. Nissan Navara universal joint replacement at the recommended interval is critical for avoiding secondary damage to the driveshaft tubes and differential flanges that can result from a failed joint.
Nissan Hardbody (D21) Pickup
The Nissan Hardbody has a long history in Colombian and Latin American markets as a durable workhorse for small businesses and rural operations. Its two-piece propeller shaft uses multiple universal joints — typically at the gearbox flange, the centre bearing support, and the rear differential flange. The Nissan Hardbody universal joint demand in the Colombian aftermarket is substantial, with GUN26, GUN27, GUN29, and GUN34 among the most commonly required part numbers. Proper torque-to-angle phasing during reassembly is particularly important on the two-piece Hardbody shaft to avoid resonant vibration at highway speed.
Nissan Commercial Trucks & Vans
Medium and heavy commercial Nissan vehicles — including the Nissan UD truck range and Nissan Cabstar vans — use larger industrial-yoke universal joints (FIG type I) at both driveshaft positions and in power take-off applications. The GUN31, GUN41, and GUN43 part numbers cover these higher-torque, longer-cross-length applications. Fleet operators managing Nissan truck universal joint replacement programs benefit from the GUN series cross-referencing system, which allows technicians to quickly identify the correct part without needing access to model-specific technical manuals.
Nissan Passenger Cars — Steering Column Universal Joint
Smaller-diameter GUN series parts — particularly GUN44 (D = 20.5 mm, L = 56.6 mm) and GUN45 (D = 20.7 mm, L = 52.4 mm) — are used in steering column universal joint positions on various Nissan passenger cars. The steering universal joint allows the steering column to change direction through the firewall to connect with the steering rack or recirculating-ball gearbox. A worn steering column universal joint introduces looseness and binding in the steering feel, compromising safety. Timely universal joint replacement in steering applications is one of the most safety-critical maintenance tasks on any Nissan vehicle.
Off-Road & Agricultural Applications in Colombia
In Colombia’s interior regions — including the coffee-growing zones of Caldas and Risaralda, the cattle ranches of Casanare, and the mining districts of Antioquia — Nissan 4WD vehicles operate under extreme conditions that accelerate universal joint wear far beyond normal highway cycles. Constant articulation, high mud contamination, and elevated temperature from prolonged low-speed hard-pull operation combine to challenge driveline sealing and bearing lubrication. For these applications, EP NISSAN universal joint replacements fitted with reinforced NBR seals and higher-grade needle roller assemblies are the appropriate choice, extending re-inspection intervals and reducing unplanned breakdown risk.
Industrial Machinery & Special Vehicles
GUN series universal joint parts are also used in adapted industrial applications beyond standard road vehicles — including Nissan-engined forklifts, special-purpose vehicles, and industrial conveyors that use Nissan driveline components. The FIG type I (industrial) parts — GUN31 (D 32 mm, L 107 mm) and GUN43 (D 55.1 mm, L 163.8 mm) — are specifically dimensioned for these heavier-duty, higher-torque configurations. Their larger bearing journals distribute contact load over a greater surface area, extending service life in continuous-duty industrial environments.
7. 法规遵从性和行业标准
When procuring and installing NISSAN universal joint replacement parts, operators throughout Colombia and across international markets must be aware of the applicable regulatory and technical standards governing vehicle roadworthiness, component quality, and workplace safety.
Colombia — Revisión Tecnicomecanica (Resolution 3500): Colombian vehicles registered for road use are required to pass periodic technical-mechanical inspections at certified inspection centres (CDA). Driveline components including universal joints are assessed for wear, play, and integrity. A NISSAN universal joint with measurable angular play or visible bearing damage will cause inspection failure. Vehicle owners in Bogotá, Medellín, Cali, and other Colombian cities should verify the driveshaft condition at each service interval to avoid failed inspections and associated fines or vehicle immobilization orders.
Colombia — ICONTEC NTC Standards: The Instituto Colombiano de Normas Técnicas y Certificación governs the quality requirements for automotive replacement components. Importers bringing NISSAN universal joint GUN series replacement parts into Colombia should ensure product documentation demonstrates compliance with applicable NTC standards or internationally recognized equivalent certifications, supporting unobstructed customs clearance and sale through registered automotive distributors.
Japan — JASO (Japan Automobile Standards Organization): As Nissan is a Japanese automotive manufacturer, OEM and aftermarket universal joints for Nissan applications are developed against Japanese Industrial Standards (JIS) and JASO technical standards, which define dimensional tolerances and load-rating requirements for driveline components. GUN series part numbers originated in the JASO-aligned OEM supply chain and carry dimensional specifications consistent with JIS B 1553 (universal joints for general engineering) as applicable.
European Union — Machinery Directive & Vehicle Type Approval: For Nissan vehicles imported into the EU or serviced by EU-based operators, replacement universal joints must meet type-approval requirements under EU regulations governing replacement parts (EC Regulation 661/2009 and its successors). ISO 9001 certification of the manufacturing facility and dimensional conformance to original specifications are key criteria for demonstrating compliance under these regulations.
Occupational Safety — Driveline Service: In any market, technicians performing NISSAN universal joint replacement on vehicles raised on a lift or jack stands must follow applicable Lockout/Tagout (LOTO) procedures, ensure adequate vehicle support, and use properly calibrated torque wrenches when re-tightening driveshaft flange bolts to manufacturer-specified values. Failure to correctly torque flange fasteners is a leading cause of driveshaft separation incidents in the automotive service environment.
8. 关于我们
We specialize in the manufacture and global distribution of automotive driveline components, with universal joints at the centre of our product range. Our production facilities employ plasma cutting, CNC gear machining, precision turning, induction heat-treatment, three-axis CMM inspection, and full surface-roughness and microhardness verification — a complete in-house capability that ensures dimensional and metallurgical traceability from raw material to finished product.
Our ISO 9001:2008 certification, independently verified by DQS GmbH and registered with IQNet, covers the full production scope for universal joint cross kits, including NISSAN universal joint GUN series products. API Monogram Licence 7F-0048 further attests to our ability to meet the exacting material and dimensional process requirements of the petroleum industry supply chain.
车间
9. 相关产品及系统兼容性
A complete Nissan drivetrain service goes beyond the universal joint. We supply a full range of compatible automotive driveline components, enabling one-stop procurement for distributors, fleet workshops, and independent mechanics throughout Colombia.
Frequently Asked Questions — NISSAN Universal Joint
Q1. What is the main function of a universal joint in a Nissan Navara or Hardbody drivetrain?
The NISSAN universal joint connects the transmission output shaft to the propeller shaft and the propeller shaft to the rear differential, allowing these components to remain coupled and transmit torque even as the suspension moves up and down. Without it, any angle change between the gearbox and axle would immediately disconnect the drive. On the Nissan Navara and Hardbody — vehicles that are commonly used for off-road work in Colombia — this angular accommodation is especially important given the severe terrain encountered on rural tracks and ungraded roads.
Q2. How do I know when my Nissan universal joint needs replacement?
The most reliable indicators are: a metallic clunking noise when taking up drive from rest or during gear changes; a vibration or shudder that increases with vehicle speed and reduces at higher throttle; visible rust, cracking, or grease leakage at the bearing cups; and physical play when you grip the driveshaft and attempt to rotate it by hand with the vehicle in gear. If any of these symptoms appear, schedule a NISSAN universal joint replacement promptly — a completely failed joint can cause the driveshaft to separate from the vehicle while in motion, which is a serious safety event.
Q3. What is the difference between FIG type A, B, and I in the NISSAN universal joint table?
FIG type A refers to a standard fork-yoke (U-yoke) configuration where two arms of the yoke grip the bearing cups with snap rings. FIG type B is a flange-yoke design where the bearing cups are retained in a circular flange plate rather than an open fork — this design is more common at differential and gearbox flanges where the driveshaft must bolt directly to a machined face. FIG type I denotes an industrial-style yoke used on heavier commercial vehicles and industrial equipment, with larger bearing ears and higher bearing-cup retention forces to handle greater torque loads.
Q4. What does the nissan gun metal universal joint mean and why does it matter for fleet operators?
The term “GUN metal universal joint” refers specifically to the GUN series part-numbering system used by Nissan — it does not mean the component is made from gun metal (a copper-tin-zinc alloy). GUN is simply the Nissan prefix for their universal joint cross-kit part numbers (GUN25 through GUN48 and beyond). For fleet operators managing a mixed Nissan vehicle inventory, understanding that all GUN-prefixed part numbers belong to one family simplifies parts stocking, reduces misidentification errors, and streamlines the ordering process with suppliers who catalogue these parts under the EP GUN series.
Q5. What is the KOYO and MATSUBA cross-reference number used in the NISSAN universal joint catalogue?
Koyo (now operating as JTEKT Corporation) and Matsuba are established Japanese aftermarket bearing and universal joint manufacturers. Their reference numbers — for example N2461 (Koyo) and UJ110 (Matsuba) cross-referencing GUN26 — allow workshops using Japanese-brand catalogues to identify the correct EP replacement without needing to look up the OEM Nissan part number separately. This cross-referencing system is particularly useful in markets where Koyo or Matsuba products have traditionally been the primary aftermarket supply, including Japan, Southeast Asia, and parts of Latin America.
Q6. How do I properly install a NISSAN universal joint replacement to avoid vibration after service?
The most common cause of vibration after NISSAN universal joint replacement is incorrect driveshaft phasing — that is, reassembling the driveshaft halves with the yokes 90 degrees out of phase rather than in alignment. Always mark the relative positions of the driveshaft yokes with a paint pen or scribe before disassembly. When fitting the new cross kit, ensure that the bearing cups are fully seated (flush with or just below the yoke ear face) before installing snap rings, as a partially seated cup creates angular play that generates vibration and accelerates wear. Torque all flange bolts to the factory specification — typically 40–55 N·m for Navara rear flange bolts — and road test at progressively increasing speeds to confirm vibration-free operation.
Q7. Where can I find a reliable supplier of Nissan universal joint parts for bulk orders in Colombia or Ecuador?
Use the enquiry form on this product page to submit your quantity requirements and preferred delivery location within Colombia or Ecuador. Our sales team maintains stock of the most common GUN series part numbers for rapid despatch, and can consolidate multi-SKU orders to reduce per-unit freight costs for bulk purchasers. Minimum order quantities, available stock levels, and delivery lead times can all be confirmed within one business day of enquiry. We work with established freight partners to ship to Bogotá, Guayaquil, Quito, and other Latin American distribution hubs on a regular schedule.
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