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Automatic transmission assemblies & parts — condition as noted per item · stock in Guangzhou, shipping worldwide
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5L50 AT Transmission Parts

GM Hydra-Matic 5L50-E five-speed automatic — the heavier unit of the GM 5L40-E / 5L50-E pair, also supplied to BMW as the A5S390R · also known as 5L50 / 5L50E · Photos updated October 2026

Automatic (AT) GM In stock — Guangzhou warehouse Photos updated October 2026

Mingfeng Auto Parts (Huadu, Guangzhou) exports automatic transmissions and parts. Send the 5L50 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.

GM 5L50 AT friction plate for export — TRANSFENG Mingfeng stock

Specifications

Transmission type
Five-speed automatic for longitudinal engine layouts, in rear-wheel drive and all-wheel drive
Designations
GM Hydra-Matic 5L50-E · also catalogued and built as A5S390R. The ATSG overhaul manual for the 4L40-E / 5L40-E covers the 5L40, 5L40-E, 5L40-E M82, MX5, A5S360R, 5L50, 5L50-E, 5L50-E M22, A5S390R, 4L40, 4L40E, 4L50 and 4L50E.
Valve body identification
5L50-E '04-later units carry separator plate code 374 — Sonnax part GM072. The 5L40-E codes are separate: GM070 for '02-later gas-only units, BMW009 for BMW '98-'01, BMW010 for BMW diesel and GM071 for the Range Rover 3.0 diesel.
Plate codes by unit
5L40-E '98-'01 gas: 008, 066, 068, 275, 614, 789, 801, 811 or 954 · 5L40-E '02-later gas: 275, 378 or 789 (275 and 789 may be either '98-'01 or '02-later) · 5L50-E '04-later: 374 (Sonnax)
Interchange caution
The Range Rover 3.0 diesel has a different accumulator size and spring strength from the BMW version. Using the wrong valve body will cause driveability problems, including harsh shifts that will not adapt (Sonnax)
Applications in the ATSG manual
Cadillac CTS 2.8L / 3.6L / 5.7L / 6.0L, 2003–2007 · Cadillac SRX 3.6L / 4.6L, 2004–2009 · Cadillac STS 3.6L / 4.6L / 4.4L, 2005–2007 · Cadillac XLR 4.4L, 2004–2006
OEM operating characteristics
GM service bulletin 02-07-30-002A (August 2004) describes the 5L40E/5L50E as calibrated to give more of a manual-transmission feel than other Hydra-Matic automatics: noticeably increased powertrain braking when the accelerator is released, a Sport mode on the CTS that delays upshifts and holds a 5-4 downshift for ten seconds, Driver Shift Control on the SRX, STS and XLR, and Performance Algorithm Shifting on the XLR and the 2004 SRX.
Bulletin coverage
That bulletin covers 2003–2005 Cadillac CTS, 2004–2005 Cadillac SRX and XLR and 2005 Cadillac STS with the 5L40E/5L50E, RPOs M82, M22, MX5 and MV3 (GM bulletin 02-07-30-002A)

Common applications

  • Cadillac CTS — 2003–2007, 2.8L / 3.6L / 5.7L / 6.0L (ATSG 5L40E / 4L40E manual)
  • Cadillac SRX — 2004–2009, 3.6L / 4.6L (ATSG); also covered by GM bulletin 02-07-30-002A for 2004–2005
  • Cadillac STS — 2005–2007 and Cadillac XLR — 2004–2006 (ATSG; GM bulletin 02-07-30-002A)
  • BMW applications — the ATSG manual for this family lists BMW among the makes covered, and the BMW side of the family has its own valve body codes (BMW009 and BMW010, Sonnax)
  • Range Rover 3.0 diesel — 5L40-E with its own valve body code GM071 and plate codes 376, 659 or 802 (Sonnax)

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 5L50

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 5L50. 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.

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 5L50 transmissions from China?

GM 5L50 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 A4CF2, A6GF1, A6LF1 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 — 5L50 AT

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Friction plate

5L50 Friction plate — photo 1 of TRANSFENG stock
Friction plate 5L50Enquire →
5L50 Friction plate — photo 2 of TRANSFENG stock
Friction plate 5L50Enquire →
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