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Chassis Components› Crossmembers

Tuff Mounts

Tubular Transmission Crossmember for GM T400 LS Conversion

$1,899.00 $1,690.00 Save $209.00

SKU: TM450

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Special Order
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$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
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Moderate — 2–4 hours

Overview

The Tuff Mounts Tubular Transmission Crossmember is designed to suit a GM T400 gearbox in W123 Mercedes models with an LS conversion. It is intended for use with Tuff Mounts LS Conversion mounts TM450. This crossmember requires the use of either the TMT001 or TMTR001 transmission mount.
Show original supplier description
The Tuff Mounts Tubular Transmission Crossmember is specifically engineered for GM T400 gearboxes when performing an LS engine conversion in W123 Mercedes chassis. This crossmember is designed to work in conjunction with Tuff Mounts LS Conversion mounts, model TM450, ensuring proper fitment and support. For complete installation, this crossmember mandates the use of either the TMT001 or TMTR001 transmission mount. The product has a listed weight of 2 kg and dimensions of 38 × 19 × 11 cm. It is compatible with Mercedes vehicles featuring an LS Series engine and a T400 gearbox.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandTuff Mounts
Part NumberTM450
CategoryChassis Components
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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