Transmission Crossmember for BMW Z4 M Roadster S54 (2003-2008)

Clear BMW chassis

This is the vital frame piece that supports the transmission assembly. If yours is bent or missing, replace it before you head back out on the road again.

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Genuine BMW Manual Transmission Crossmember

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:49465

Part#: 22316760531

Ships on Nov 27, 2026

78% off MSRP $ 263.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 58.99 USD

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78% off MSRP

$ 263.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 58.99 USD

Add to Wish List

Genuine BMW Gearbox Support
This item fits the following BMW Chassis:
E85 Z4M,E46,E85 Z4,E86 Z4

AAF E46 Transmission Crossmembers - 6-Speed M

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For M Models

T#:7624640

Part#: 116223

Ships in 4 Business Days

$ 190.00 USD

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$ 190.00 USD

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Since 2010, Advanced Auto Fabrication has been producing and developing both parts and full fledged race cars. Their knowledge base covers a wide range of vehicles both domestic and imported. In the specific case of BMW, the team at AAF has a particular affinity for building and designing components for BMW race cars. Ideal for the SE46 racing series, the AAF E46 6-speed Transmission Crossmember is a heavy-duty and worthwhile upgrade. The OEM thin cast aluminum cross member has been known to fail in multiple different ways. When using stiff engine and transmission mounts, the cross member can crack out and break around these mounting points. The cross member can also break from the high amounts of load transferred through the drive train. While chassis flex from hard cornering is being applied through the engine and transmission from the front cross member, this load is sent from the transmission back into the chassis at the transmission cross member. This is simply too much stress for the OEM cross member to hold up to under the extreme punishment of road racing. The AAF E46 Transmission Cross Member is completely constructed of 1/4' thick heavy-duty aluminum plate. It is designed specifically to cope with hours of endurance racing.

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Transmission Crossmember for BMW Z4 M Roadster S54 (2003-2008)

Genuine BMW Manual Transmission Crossmember

AAF E46 Transmission Crossmembers - 6-Speed M

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