On this page
This guide collects the specification and buying detail behind our clutch, transmission & driveline catalogue. For wholesale quotations, browse the catalogue, send part numbers through a parts list upload or request product sourcing for items that are not listed online.
What this category covers
- Clutch parts: clutch kits, clutch discs, clutch covers (pressure plates), release bearings, pilot bearings and flywheels.
- Hydraulic actuation: clutch master cylinders and slave cylinders, including concentric slave cylinders.
- Front-drive and IFS 4x4 parts: CV joints and boots and drive shafts.
- Propeller shafts: universal joints, center bearings and propeller shaft components for rear-drive and 4x4 vehicles.
- Axles and differentials: crown wheel and pinion sets, bearings, seals and differential components.
- Transmission: gearbox components and transmission mounts.
Driveline layouts
Most Japanese pickups, including the Toyota Hilux, Isuzu D-Max and Mitsubishi Triton, use a longitudinal engine, manual or automatic transmission, a transfer case on 4WD versions, a two-piece rear propeller shaft on longer wheelbases, and a solid rear axle. 4WD versions add a front differential and CV drive shafts on independent front suspension. Light trucks such as the Isuzu NPR are rear-wheel drive with a multi-piece propeller shaft and heavy-duty clutch.
What drives replacement
- Clutches: overloading, towing, riding the clutch, hill starts, and water or oil contamination. Clutch life on work pickups is often much shorter than on private vehicles.
- CV joints: torn boots admitting dust and water, lifted suspension angles, and aggressive off-road use.
- U-joints and center bearings: lack of greasing, water crossings, and driveline vibration from worn mounts.
- Differentials: oil leaks, overheating and shock loads from wheelspin.
Dual-mass flywheels
Some newer diesel pickups use dual-mass flywheels to reduce drivetrain vibration. These wear and are expensive to replace; conversion kits to single-mass flywheels exist in the aftermarket, but they change vibration behavior and should be offered with clear information.
Identification
Clutch parts are specified by diameter, spline count and diameter, pressure plate type and bolt pattern. CV joints are identified by spline counts, ABS ring and seal diameters. Propeller shaft parts depend on U-joint cap diameter, width and retention type. When references are incomplete, use RFQ upload with dimensions and photos.
Automatic transmissions
Automatic transmissions have become more common on newer pickups and SUVs in many markets. They reduce clutch demand but create demand for transmission mounts, filters, cooler lines and seal kits. Distributors should review the manual-to-automatic ratio of the local vehicle parc by model year when deciding clutch kit depth, because older manual vehicles will continue to dominate clutch demand for years while the newer automatic share grows.
Buying and specification checklist
Clutch parts
- Provide OEM number, engine code, transmission code and year. Clutch sizes can change between power outputs of the same engine.
- Confirm disc diameter, spline count and spline diameter, pressure plate type (push or pull, diaphragm), and flywheel type (single-mass or dual-mass).
- Decide between kits (disc, cover and release bearing, sometimes pilot bearing and alignment tool) and individual components.
- For heavy-duty users, consider reinforced facings or higher clamp-load covers, and explain the pedal-feel trade-off to customers.
Driveline parts
- CV joints: outer and inner joint spline counts, ABS ring tooth count, seal diameters, left or right side.
- U-joints: cap diameter, overall width, retention type (inside or outside circlips) and greaseable or sealed design.
- Differential parts: ratio, tooth counts, axle model and number of splines.
Quality checks
Clutch facing bonding and rivet quality, pressure plate clamp load consistency, disc runout, CV boot material and grease fill, and U-joint needle bearing retention.
Packaging
Clutch kits are heavy and should be packed in rigid boxes with internal separators so the disc facing is not damaged by the cover. Drive shafts and propeller shafts are long and need individual protection for splines and boots.
Consolidation
Driveline parts are dense and pair well with lighter lines in a mixed container.
Stock strategy
Clutch kits for the dominant manual pickup and light-truck engines, CV boot kits and U-joints for the main 4x4 platforms are the core volume. Differential and gearbox components are lower-volume, higher-value lines best ordered against rebuild shop demand.
Product types in detail
Clutch Discs
The clutch disc (friction plate) connects the engine flywheel to the transmission input shaft. It is the main wear component of a manual clutch and the part most affected by overloading, towing and slipping. Browse clutch discs in the catalogue.
Construction
- Friction facings – usually organic composite on both sides for smooth engagement. Heavy-duty discs may use cerametallic (ceramic-metallic) buttons for higher heat resistance at the cost of harsher engagement and faster flywheel wear.
- Cushion springs (marcel) – wave springs between facings that smooth engagement.
- Torsional damper springs – coil springs in the hub that absorb driveline vibration. Diesel engines place heavy demands on damper springs.
- Splined hub – must match the transmission input shaft spline count and diameter.
Variants
- Standard OE-equivalent discs
- Heavy-duty organic discs with higher-friction facings
- Cerametallic or button-style discs for towing, tipper and high-torque use
- Discs for dual-mass flywheel applications (often without damper springs) versus discs for single-mass flywheel conversions (with damper springs)
Specifications
Outer diameter, inner facing diameter, spline count, spline major diameter, hub offset or stand-out, facing material and damper design. Some pickups use different disc sizes for different engine outputs, and truck discs vary by gearbox model. Discs for light trucks such as the Isuzu NPR are larger and heavier than pickup discs.
Discs are most often sold in clutch kits, but individual discs are common in markets where workshops reuse covers or rebuild clutches locally.
Ordering checklist
- OEM number, engine code, transmission model and year.
- Dimensions: outer diameter, spline count, spline diameter and hub offset.
- Facing type: organic, heavy-duty organic or cerametallic; match to vehicle use and customer expectations.
- Flywheel type: confirm whether the disc is for a dual-mass or single-mass flywheel.
- Quality checks: facing rivet quality, disc runout, hub spline fit on a sample input shaft, damper spring retention.
- Packaging: individual boxes that keep facings clean and flat, with protection from moisture and oil.
- Stock mix: individual discs suit markets with a strong rebuilding culture; kits suit markets where workshops replace complete clutches.
- Label clarity: mark the flywheel side on the disc and in instructions, since discs installed backwards will not release correctly.
- Sample testing: before committing volume for a high-use reference, fit samples to fleet vehicles and record engagement quality, judder and slip under load.
- Heavy-duty communication: cerametallic discs should be clearly labeled as such so that counter staff do not sell them to private owners expecting smooth engagement.
Clutch Kits
Clutch kits package the wear parts replaced in a clutch job: clutch disc, clutch cover (pressure plate) and release bearing. Many kits also include the pilot bearing and an alignment tool, and some include a flywheel or concentric slave cylinder. Kits ensure matched components and reduce ordering errors for workshops. Browse clutch kits in the catalogue.
Kit configurations
- Three-piece kits – disc, cover, release bearing.
- Four-piece kits – add pilot bearing or alignment tool.
- Kits with flywheel – for dual-mass flywheel vehicles or single-mass conversions.
- Kits with concentric slave cylinder (CSC) – on vehicles where the release bearing is integrated with the hydraulic slave cylinder.
- Heavy-duty kits – higher clamp load covers and heavy-duty or cerametallic discs for towing and commercial use.
Why kits matter for pickups
Pickups such as the Ford Ranger and Toyota Hilux are widely used as work vehicles with manual transmissions. Clutch replacement requires removing the gearbox, so labor is significant, and workshops prefer to replace every wear part at once. A kit that omits the release bearing or includes a mismatched cover leads to repeat work.
Specification points
Disc diameter and spline, cover bolt pattern and clamp load, release bearing type (conventional or CSC) and bore, pilot bearing dimensions, and flywheel type. Engine and transmission code matter more than vehicle name, since clutch sizes change with engine output and gearbox generation.
Individual components are listed under clutch discs.
Ordering checklist
- OEM numbers for disc, cover and bearing, or the complete kit reference; engine code, transmission code and year.
- Kit contents listed component by component. Kit naming is not standardized, and a missing pilot bearing or CSC causes workshop delays.
- Flywheel type: dual-mass or single-mass; whether a flywheel is included.
- Duty level: standard or heavy-duty; confirm facing material and clamp load difference.
- Quality checks: cover clamp load consistency, disc runout and spline fit, release bearing smoothness and seal quality.
- Packaging: rigid kit boxes with internal separators; the cover should not rest directly on the disc facing. Rust-inhibiting treatment on the cover pressure surface prevents corrosion in humid transit.
- Weight: clutch kits are dense; plan carton gross weights for manual handling.
- Stock planning: kits for the main manual pickup and light-truck engines move steadily; low-volume passenger references can be covered by individual components.
CV Joints & Boots
Constant velocity (CV) joints transfer torque through the changing angles of front drive shafts while allowing steering and suspension movement. On 4WD pickups with independent front suspension, such as the Toyota Hilux, Isuzu D-Max and Mitsubishi Triton, CV joints are heavily loaded in 4WD and are a common off-road wear item. Browse cv joints & boots in the catalogue.
Joint types
- Outer joints (Rzeppa or ball-type) – at the wheel end, allowing large steering angles.
- Inner joints – at the differential end, typically tripod (tripod roller) or double offset joints (DOJ), allowing plunge as the suspension moves.
- CV boot kits – rubber or thermoplastic boots with clamps and grease.
- Complete drive shafts – shaft with inner and outer joints assembled; see drive shafts.
Specifications
- Outer spline count (wheel side) and inner spline count (shaft side)
- Seal diameter and thread for the hub nut
- ABS tone ring tooth count, where fitted
- Overall length and joint body diameter
- Side and position: left or right, 2WD or 4WD, manual or automatic transmission where relevant
Boots and grease
Boot material matters. Chloroprene rubber boots are flexible and common; thermoplastic (TPE) boots resist cuts and heat better but need correct clamping tools. Grease must be CV-specific molybdenum or synthetic grease in the correct quantity.
Failure drivers
Torn boots are the root cause in most CV joint failures. Lifted suspensions increase joint angles and boot stress, and water crossings wash out grease if boots are damaged. Clicking when turning indicates outer joint wear; vibration under acceleration indicates inner joint wear.
Ordering checklist
- OEM number or vehicle details: model, generation, 2WD/4WD, transmission, and side.
- Joint data: outer and inner spline counts, seal diameter, ABS tooth count, overall length.
- Joint type: outer ball-type, inner tripod or DOJ; complete shaft or joint only.
- Boot kits: material (rubber or thermoplastic), clamp type, grease quantity and whether tools are required.
- Included parts: hub nut, circlips, boot clamps and grease sachets.
- Quality checks: smooth articulation without notching, correct grease fill, ABS ring fit and consistent spline profile.
- Packaging: individual boxes with spline caps and boot protection. Boots are easily punctured in bulk cartons.
- Lifted vehicles: consider stocking heavy-duty boots and joints for markets with many lifted 4x4s, and communicate that lift height affects CV life.
- Weight: joints are dense; check carton weights for handling.
- Boot kit depth: boot kits are low-cost, high-turnover items that prevent joint failures. Stock them deeper than joints for the main 4x4 platforms.