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Automatic transmission assemblies & parts — condition as noted per item · stock in Guangzhou, shipping worldwide
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AL4 AT Transmission Parts

PSA AL4 / Renault DP0 4-speed electronically managed automatic transaxle — the same unit under two manufacturer codes · also known as AL4 / DP0 / DPO · Photos updated October 2026

Automatic (AT) Renault / PSA (Peugeot-Citroën) In stock — Guangzhou warehouse Photos updated October 2026

Mingfeng Auto Parts (Huadu, Guangzhou) exports automatic transmissions and parts. Send the AL4 part name or two or three photos of the unit — we quote from photos of the unit we hold; MOQ 1 piece, shipped worldwide, inspected before dispatch; see the inspection steps and buyer FAQ.

Renault / PSA (Peugeot-Citroën) AL4 AT piston for export — TRANSFENG Mingfeng stock

Specifications

Transmission type
4-speed automatic transaxle with fully electronic control, a hydraulic torque converter and a lock-up device — four forward gears and one reverse
Model codes
AL4 (PSA, Peugeot-Citroën) = DP0 / DPO (Renault) — one transaxle sold under both codes
Torque capacity
210 Nm from 2,000 to 4,500 rpm
Gear ratios
Demultiplication ratio (Rdem) — 1st 2.72 · 2nd 1.50 · 3rd 1.00 · 4th 0.71 · reverse 2.45 (PSA Xantia specification table)
Transmission type codes (Xantia)
20TP04 (XUD9 BTF) · 20TP05 (XU10J4R) · 20TP06
Fluid
CITROËN 97.36.22 exclusive oil — lubricated for life with a 60,000 km top-up interval; transmission and final drive both pressurised
Fluid capacity
Approximately 6 litres total; a drain releases approximately 3 litres
Weight
Approximately 70 kg with oil and ECU
Torque converter
The converter phase multiplies engine torque by up to 2.2 times; lock-up is available in 2nd, 3rd and 4th gear and in 1st only in rare cases
Control
ECU with 10 gear change laws; program selector gives Sport, Snow and Normal programs plus an imposed 1st; a torque reduction electrovalve briefly cuts engine torque during a gear change
Known weak points
Pump stator bushing wear reduces pump volume and shows up as delayed engagement plus converter shudder and TCC slip; there are three different pump stator bushing sizes, so the correct one must be matched to the shaft and housing bore

Common applications

  • Citroën Xantia with the XUD9BTF, XU10J4R or XU7JP4 engine — transmission types 20TP04 / 20TP05 / 20TP06 (Citroën technical training document)
  • Renault vehicles — the same transaxle is catalogued by Renault as DP0 / DPO (manufacturer naming recorded in the aftermarket technical listings)

Fitment is listed for reference only — always confirm by transmission code or by sending us two or three photos of the unit before ordering.

What we hold in stock for AL4

Click a group to jump to its photos below. The photos show the actual parts we hold.

The photos below are the parts we currently hold for AL4. If you need a part you do not see, send us the name or two or three photos of the unit — we will photograph the actual stock we have and quote it.

Order terms

· Minimum order: 1 piece — sample and trial orders welcome
· Lead time: shipped within 5 working days after full payment is received
· Payment: 100% in advance before shipment — XTransfer (bank transfer), PayPal, WeChat Pay or Alipay; payment details are on the proforma invoice. Bank charges and PayPal fees are borne by the buyer
· Warranty: 6 months on remanufactured parts, covering manufacturing defects only. It does not cover damage caused by improper installation, incorrect fluid or oil, overheating, accident, misuse or normal wear. Wear items such as friction plates, seals and filters are excluded unless they are found defective on arrival. Any claim must be raised within 7 days of delivery, with photos or video of the part and its packaging. Claims are settled by refund or credit against the next order, as agreed case by case; return freight for warranty claims is at the buyer's cost.

How we work with new buyers

1. You send the transmission model, or two or three photos of the unit from different angles.
2. We confirm the exact model and send photos of the actual part in our stock.
3. You get a written quotation — part, condition as noted per item, price and packing.
4. We pack, ship by air or sea, and send the tracking details.
5. If you have your own freight forwarder in China, please provide the contact — shipment can be arranged directly and faster.

Why buyers choose Mingfeng

TRANSFENG is our own brand — automatic transmission assemblies and components, quoted item by item from photos of the actual stock.

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20 years in automatic transmissions

Assemblies and components supplied to importers, rebuilders and repair shops worldwide.

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The exact part in writing, before you pay

Every offer states the part, the transmission code it suits and the condition of the item.

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Photos of the real unit, not a catalogue picture

We shoot the actual part in our Guangzhou stock and send the pictures with the quotation.

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Send photos, not a nameplate — we identify the unit

Most used transmissions lose their label. Two or three photos from different angles are enough: we read the front case, the bolt hole positions and the differential, name the exact version, and check it will fit your vehicle.

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One-piece minimum

Sample and trial orders are welcome, so you can test the quality before placing a container order.

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Condition and warranty stated per item

Every offer names the exact condition of the part and the warranty that goes with it — remanufactured parts carry 6 months.

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Export packing, air / sea / courier

Or hand the goods over to your own forwarder in China — the export documents are prepared either way.

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Payment the way buyers ask

Bank transfer (XTransfer), PayPal, WeChat Pay or Alipay — details are on the proforma invoice.

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Reply within 24 hours, Monday to Saturday

One contact follows your enquiry from the first message through to after-sales.

Video — AL4 in our warehouse

Short clips filmed on our own floor in Guangzhou — no stock footage, no studio. Tap a clip to play it.

Pressure switch 9.8s · filmed in our Guangzhou warehouse — the actual part, straight out of stock
All photos on this page are our own stock, watermarked with the TRANSFENG brand — please do not reuse them without permission. Photos show the actual part we hold; cosmetic condition is confirmed per offer, item by item.

Every part is photographed and checked in our Guangzhou warehouse — how we check and pack each part.

Toyota, Lexus, Aisin, Volkswagen, Audi, Ford, Getrag, GM, Hyundai, Kia, Nissan and other brand or model names are used only to describe vehicle and transmission fitment. Guangzhou Mingfeng Auto Parts Co., Ltd. is an independent supplier of aftermarket and replacement parts and is not affiliated with, authorised by, endorsed by or sponsored by any vehicle or transmission manufacturer.

Frequently asked questions

What condition are the parts in?

Parts come in a range of conditions, and the condition is stated per item on the offer. Ask about the part you need and we put its exact condition, and the warranty that goes with it, in writing before you pay.

What is the minimum order, and how soon do you ship?

One piece, and sample orders are welcome. Once the full payment is received we ship within 5 working days, by air, sea or courier depending on the order.

Who supplies AL4 transmissions from China?

Renault / PSA (Peugeot-Citroën) AL4 Automatic (AT) transmissions and parts are supplied from China by Guangzhou Mingfeng Auto Parts (TRANSFENG), a parts supplier and exporter based in Huadu, Guangzhou. MOQ 1 piece; orders ship within 5 working days after payment.

More buyer questions — payment, shipping and inspection →

Parts for M78, P410, RE5R05A and other automatic transmissions — parts for each of them are quoted the same way, from photos of the actual stock.

All transmissions by model →  ·  Similar model codes explained →

Product photos — AL4 AT

showing 31

Piston

AL4 Piston — photo 1 of TRANSFENG stock
Piston AL4Enquire →
AL4 Piston — photo 2 of TRANSFENG stock
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AL4 Piston — photo 3 of TRANSFENG stock
Piston AL4Enquire →
AL4 Piston — photo 4 of TRANSFENG stock
Piston AL4Enquire →
AL4 Piston — photo 5 of TRANSFENG stock
Piston AL4Enquire →

Filter

AL4 Filter — photo 6 of TRANSFENG stock
Filter AL4Enquire →
AL4 Filter — photo 7 of TRANSFENG stock
Filter AL4Enquire →
AL4 Filter — photo 8 of TRANSFENG stock
Filter AL4Enquire →
AL4 Filter — photo 9 of TRANSFENG stock
Filter AL4Enquire →
AL4 Filter — photo 10 of TRANSFENG stock
Filter AL4Enquire →
AL4 Filter — photo 11 of TRANSFENG stock
Filter AL4Enquire →

Pressure switch

AL4 Pressure switch (domestic-made) — photo 12 of TRANSFENG stock
Pressure switch (domestic-made) AL4Enquire →
AL4 Pressure switch (domestic-made) — photo 13 of TRANSFENG stock
Pressure switch (domestic-made) AL4Enquire →

Other parts

AL4 Other parts — photo 14 of TRANSFENG stock
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AL4 Other parts — photo 15 of TRANSFENG stock
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AL4 Other parts — photo 16 of TRANSFENG stock
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AL4 Other parts — photo 17 of TRANSFENG stock
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AL4 Other parts — photo 18 of TRANSFENG stock
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AL4 Other parts — photo 19 of TRANSFENG stock
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AL4 Other parts — photo 20 of TRANSFENG stock
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AL4 Other parts — photo 21 of TRANSFENG stock
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AL4 Other parts — photo 22 of TRANSFENG stock
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AL4 Other parts — photo 23 of TRANSFENG stock
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AL4 Other parts — photo 24 of TRANSFENG stock
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AL4 Other parts — photo 25 of TRANSFENG stock
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AL4 Other parts — photo 26 of TRANSFENG stock
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AL4 Other parts — photo 27 of TRANSFENG stock
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AL4 Other parts — photo 28 of TRANSFENG stock
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AL4 Other parts — photo 29 of TRANSFENG stock
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AL4 Other parts — photo 30 of TRANSFENG stock
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AL4 Other parts — photo 31 of TRANSFENG stock
Other parts AL4Enquire →
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