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Home/Factory & QC/Stage 4: OEM-Grade Wear Parts & Known-Failure Upgrade
OEM wear parts ready for upgrade installation
OEM-spec clutch packs, seals, gaskets and filters used for wear part replacement

Real on-site footage from the Huadu factory floor

Process Walkthrough · Stage 4 of 10

OEM-Grade Wear Parts & Known-Failure Upgrade

Stage 4 of the ten-stage TRANSMESUN remanufacturing process — the same procedure every unit follows at our Guangzhou Huadu factory, documented step by step.

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All ten stages
What happens in stage 4

Inside the stage.

All high-friction and consumable components are replaced with OEM-spec parts: clutch packs, friction plates, steel plates, seals, gaskets, filters, thrust washers and rubber parts. Nothing consumable carries over from the core.

Beyond replacement, we actively upgrade model-specific factory weak points — historically problematic parts of that transmission family are revised to resolve original design defects, which is what improves long-term reliability rather than just restoring the status quo.

A rebuild that only swaps what is already broken leaves the next weak link in place. Replacing every consumable and revising the family's documented weak points is what turns a repair into a remanufacture.

Acceptance criteria

What this stage verifies.

Applied to every unit on the line — the same standard shown in our on-site videos and verified by the 2026 Intertek on-site assessment (report 481351002_P+T).

Clutch packs, friction and steel plates: new Seals, gaskets and O-rings: new Filters and thrust washers: new All rubber parts: new Model-specific known-failure points upgraded Upgrades chosen per transmission family
Stage 4 FAQ

Questions buyers ask about this stage.

Do you upgrade parts beyond the original specification?

Yes. Model-specific factory weak points and historically problematic parts are actively upgraded to resolve original design defects and improve long-term reliability.

Which components are always replaced on every unit?

All high-friction and consumable parts: clutch packs, friction and steel plates, seals, gaskets, filters, thrust washers and rubber parts.

What guarantee covers a unit rebuilt through this process?

Every remanufactured unit carries a 12-month quality guarantee. Ordering terms are verified in the 2026 Intertek on-site assessment: MOQ from 1 piece, lead time from 1 day for in-stock codes, and written fitment confirmation before dispatch.

See the full ten-stage process →

Order with confidence

Every unit follows all ten stages.

MOQ from 1 piece · lead time from 1 day for in-stock codes · 12-month quality guarantee · fitment confirmed in writing before dispatch. Send your transmission code or nameplate photo — engineer reply within 4 business hours.

Send Inquiry → WhatsApp +86 134 3039 1618