CE-Certified Factory·Machinery Directive 2006/42/EC·Guangzhou, China Verified Alibaba Gold Supplier · Engineer reply ≤ 4h · WhatsApp +86 134 3039 1618 ↗

TRANSMESUN 2026 catalog scan · Catalog page 11

Sensors, Switches & Wiring

AL4 switch, sensor & wiring

Name: AL4 — TRANSMESUN
Brand: TRANSMESUN
SKU: TM-SENS-AL4

4-speed automatic · fitment verified in writing before dispatch · 12-month guarantee · MOQ from 1 piece

CE-certified factoryIntertek assessedDyno / bench testedExport crating

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Product Overview

What this part is — and why it fails.

The AL4 is the PSA / Renault (DPO) 4-speed automatic fitted to Peugeot 307, 408, Citroën C-Quatre, Elysée. This page covers the switch, sensor & wiring for that platform, supplied by Guangzhou Meishun (TRANSMESUN) — a CE-certified remanufacturing factory in Huadu, Guangzhou, with 20 years in the transmission trade.

One of the highest-volume units in Africa, the Middle East and South America: valve-body wear, solenoid regulation and thermal degradation are the classic failure chain. That failure chain is exactly what our process is built around: the part is inspected against the platform's documented wear points. Electrical function-checked per unit; connector and pin spec verified against the platform. Every order is verified against your transmission code before anything ships.

Specifications

Specification sheet — AL4.

Platform data is standard published information for this transmission family. Order-specific confirmation (condition options, kit contents, configuration) is provided in writing with our reply.

Product	AL4 — Switch, Sensor & Wiring
Transmission platform	AL4
Platform maker / type	PSA / Renault (DPO) · 4-speed automatic
Speeds / drive	4-speed · FWD
Production era	1997–2016
Typical applications	Peugeot 307 · 408 · Citroën C-Quatre · Elysée
Condition	New (per component)
Testing	Electrical function-checked per unit; connector and pin spec verified against the platform.
Quality guarantee	12 months
Fitment verification	Confirmed in writing against your code / nameplate photo before dispatch
Packing	TRANSMESUN branded export carton
Catalog reference	TRANSMESUN 2026 printed catalog · Catalog page 11

Verified Supply Data

Ordering terms, verified — not promised.

Verified in the 2026 Intertek on-site assessment (report 481351002_P+T) and standing site policy. Documents available with your inquiry.

MOQFrom 1 piece — trial orders welcome

Fastest lead timeFrom 1 day for in-stock codes; confirmed per order

Quality guarantee12 months across all product categories

VerificationIntertek on-site Production & Trading assessment, report 481351002_P+T (valid to 2027-01-15)

Process10-stage standardized remanufacturing with lot-level traceability

Export packingExport-grade wooden crating; shipment photos provided

Use Cases

Who orders this part, and why.

Code-first diagnosis

Speed-sensor and pressure-switch codes often resolve with a €-level sensor instead of a teardown — diagnose electrical first.

Rebuild shops

Fit a new harness and conductor-plate gaskets during the rebuild; age kills connectors before gears.

Distributors

Sensors and switches are small, universal-turn stock across every platform you already carry.

Applications & Fitment

Which vehicles this platform serves.

Typical applications for this platform. Always confirm against the transmission code — one car line can carry two different units by year and market.

Peugeot 307408Citroën C-QuatreElysée

Send Your Code for Written Fitment Confirmation →

Buyer FAQ

Questions buyers actually ask.

Which sensor do I need?

By transmission code and sensor location (input/output speed, pressure, gear position). Send the code and connector photo if unsure.

Do you supply wiring harnesses?

Yes — internal and external harnesses for the major platforms are in the catalog.

Are pans supplied with gaskets?

Pans and pan-gasket sets are available; confirm with your code.

How do I verify this part matches my PSA / Renault unit before ordering?

Send the transmission code from the nameplate (or a photo of it). Our engineers confirm the generation and variant in writing before anything is packed — this removes the generation-mismatch risk that plagues this platform.

What are the ordering terms?

MOQ starts at one piece, lead time from 1 day for in-stock codes, 12-month quality guarantee across all product categories, export-grade packing with shipment photos.

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Next Step

Send the code — get written confirmation.

Transmission code, part number or nameplate photo. Our engineers reply within 4 business hours with fitment confirmation, stock status and lead time — in writing, before you commit.

Send Inquiry → Browse Model Coverage