Construction Machinery
Wheel loaders, motor graders, and backhoe loaders on ZF and Dana powershift platforms — our highest-volume segment. See platform coverage →
OEM-Grade Powertrain Components · Heavy-Duty · Off-Highway
Transmission System Parts
Torque converters, valve bodies, clutch packs, planetary gearsets and complete overhaul kits for the automatic and manual transmissions in city buses, commercial trucks, and off-highway machines. We identify the part by transmission model — not just the vehicle — so the unit you fit shifts the way it should.
ISO 9001:2015
7000+ OEM Numbers Cross-Referenced
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Can’t find the part you need?
Send us the OEM number or equipment model and we will verify the correct part for you.
Drivetrain Coverage
Transmission Platforms We Supply Parts For
A single transmission housing can hide multiple internal gear-ratio variants, so we confirm your nameplate data before quoting. The table below covers the platforms we supply most frequently — down to series level. If your platform is not listed, we likely still cover it: send us the casting number.
| Platform / Series | Type | Typical Equipment | Parts We Supply |
|---|---|---|---|
| ZF 4WG180 / 4WG200 / 6WG200 Ergopower | Powershift | Wheel loaders (incl. LiuGong, XCMG, SDLG builds), graders, articulated dumpers | Full range incl. housings & assemblies |
| ZF WG110 / WG130 / WG160 | Powershift | Backhoe loaders, telehandlers | Gears, shafts, clutch packs, pumps |
| Allison 3000 / 4000 Series | Fully Automatic | Refuse trucks, transit buses, vocational trucks | Internal hard parts, rebuild kits |
| Dana Spicer / Clark 28000 / 32000 / R32000 | Powershift | Underground mining LHDs, container handlers, heavy forklifts | Gears, converters, charge pumps |
| Volvo CE HTE / PT Series | Automatic / Powershift | Volvo L-series loaders, A-series haulers | Internal gears, shafts, solenoids |
| Caterpillar Planetary Powershift | Powershift | CAT 950 / 966 / 980 wheel loaders | Planetary gear sets, clutch packs |
| Komatsu TORQFLOW | Powershift | WA-series loaders, HD-series dumpers | Gears, friction discs, seals |
| Eaton Fuller RT / RTLO | Manual / AMT | Heavy-duty on-highway trucks | Gears, synchronizers, main shafts |
| Carraro / Dana Axle Drivetrains | Axles & Transmissions | Tractors, backhoe loaders, compact equipment | Final drives, differentials, sun gears |
A single transmission housing can hide multiple internal gear-ratio variants, so we confirm your nameplate data before quoting. The table below covers the platforms we supply most frequently — down to series level. If your platform is not listed, we likely still cover it: send us the casting number.
Fitment Accuracy
Our 4-Step Fitment Verification Process
Ordering a gear with 34 teeth when you need 35 means tearing the whole gearbox down again. Every quotation we issue passes the same four-step verification — no exceptions, no "should fit" answers.
The Nameplate
Send the transmission model, BOM (Bill of Material) number, or serial number from the metal tag on the housing — a phone photo is enough.
Physical Counts
For standalone gears or shafts, we ask for the exact spline count (internal and external) and tooth count to rule out look-alike variants within the same series.
EPC Verification
We run your serial or VIN through licensed EPC databases covering 120,000+ ZF, Allison, and Dana part records, tracing superseded numbers across catalog generations.
Verified Quotation
You receive a quotation with the confirmed OEM number, a parts diagram on request, and a written fitment guarantee — clarity before money changes hands.
What we need from you
- Photo of the transmission data plate (model / serial / BOM)
- Tooth count and spline count of the old part, if the tag is missing
- Overall length and key diameters for shafts
- Equipment VIN or machine model, if available
- Photo of the damaged part — failure mode often confirms the variant
Result: a quotation with verified OEM number, dimensional drawing on request, and a written fitment guarantee — typically within 48 hours.
Production System
How Our Parts Are Made: Production & Quality System
Every gear follows the same fixed route — and hardness inspection always comes after grinding, never before:
Forging blank
Normalizing
Turning
Gear hobbing
Carburizing
Press quenching
Gear grinding
Final inspection
VCI anti-rust packing
Production runs at our audited partner gear plants in Zhejiang and Jiangsu under our engineering supervision — audit reports available to customers under NDA. Every batch passes our in-house incoming inspection (spectrometer, hardness, CMM) before it is accepted into stock. We would rather tell you exactly how the supply chain works than pretend a single building does everything.
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OEM part numbers cross-referenced in our database
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Max. ring gear machining diameter
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Powertrain engineers & QC inspectors on staff
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Countries supplied since founding
Where Our Parts Run
Applications & Industries Served
Mining & Quarrying
Underground LHDs and rigid dump trucks on Clark and Dana heavy series, where downtime is measured in thousands of dollars per hour.
Commercial Vehicles & Buses
Refuse trucks and transit buses on Allison automatics; on-highway tractors on Eaton Fuller manuals and AMTs.
Ports & Material Handling
Reach stackers, empty-container handlers, and heavy forklifts — torque converter and clutch pack wear items in continuous duty.
Buyer Notes
Frequently Asked Questions
Do you supply complete transmission assemblies or just internal parts?
We supply both. You can order complete drop-in transmission assemblies (new or tested remanufactured) as well as individual internal gears, shafts, and clutch packs.
How do I make sure the gear ratio is correct?
Provide the data plate information from your transmission housing. If the tag is missing, provide the exact tooth count and dimensions of the old gear, and we will verify it against the OEM catalog.
Do you require a core exchange for complete assemblies?
It depends on the specific unit and your location. For brand-new OEM assemblies, no core is required. For certain remanufactured units, a core charge may apply, which is refunded upon the return of a rebuildable core. This will be clearly stated in your quote.
What is included in a Master Rebuild Kit?
A typical Master Kit includes all frictions, steel plates, complete gasket and seal kits, metal clad seals, sealing rings, and filters. Hard parts like gears and pumps are usually quoted separately based on your inspection of the core.
Can you cross-reference parts for older machines?
Yes. Our EPC access allows us to trace superseded part numbers and cross-reference components for older generation equipment (e.g., older ZF WG or Clark transmissions).
What is the MOQ for transmission gears and shafts?
MOQ is 1 piece for in-stock items. For custom production parts, the MOQ is typically 5–20 pieces depending on the forging blank, because forging dies and heat-treatment batches set the economic minimum. We will state the exact MOQ in your quotation.
Do you provide material certificates and inspection reports?
Yes. EN 10204 3.1 material certificates, dimensional inspection reports, and hardness reports (surface, core, case depth) are available with every shipment on request, at no extra charge. MPI reports are included for shafts.
What warranty do you offer on transmission parts?
Parts are warranted for 12 months from installation or 2,000 operating hours, whichever comes first, against defects in material and workmanship. Claims are handled with photos and the inspection report shipped with your order — no need to return the part first in most cases.
Can you manufacture from drawings or samples?
Yes. We machine to customer drawings, and for obsolete parts we reverse-engineer from your sample using CMM measurement and spectrometer material analysis. Typical lead time for per-drawing parts is 35–50 days including first-article inspection.
How are parts packed for sea freight to prevent rust?
Machined surfaces are coated with anti-rust oil and wrapped in VCI film, then packed in fumigation-free plywood cases. Shafts are secured in rigid cradles to prevent journal damage in transit. This packing is rated for 60+ days of sea freight.
Request a Chassis Parts Quote
Send the OEM number, chassis model or clear photos of the required part. The inquiry can then be checked against the available product information.