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  • Cobb [08 - 21 WRX/STI] Rear Differential Subframe Mount Bushing Inserts - JDMuscleBushing KitscobbCB-4297K
  • Cobb [08 - 21 WRX/STI] Rear Differential Subframe Mount Bushing Inserts - JDMuscleBushing KitscobbCB-4297K
  • Cobb [08 - 21 WRX/STI] Rear Differential Subframe Mount Bushing Inserts - JDMuscleBushing KitscobbCB-4297K

COBB Tuning

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COBB Rear Differential Subframe Mount Bushing Insert

Fits: 08-21 WRX/STI, 18 Type RA, 19 S209

$4400
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Auto Parts Store of the Year 2026

COBB Tuning COBB Rear Differential Subframe Mount Bushing Insert
Fits: 08-21 WRX/STI, 18 Type RA, 19 S209
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Fitment

Please Note: COBB CB-4297K manufacturer-confirmed fitment: 2008-2021 Subaru WRX and WRX STI, including 2018 STI Type RA and 2019 STI S209. Rear differential subframe mount bushing insert with 94A polyurethane. Official source: https://www.cobbtuning.com/products/suspension/cobb-subaru-rear-differential--subframe-mount-bushing-insert-wrx-2008-2021-wrx-sti-2008-2021-type-ra-2018-s209-2019
  • 2018 Subaru | WRX STI Type RA
  • 2008–2021 Subaru | WRX
  • 2008–2021 Subaru | WRX STI

Description

The COBB Rear Differential Subframe Mount Bushing Insert uses specially formulated polyurethane to support the rear differential securely, reduce torque twist, and add support with minimal noise and vibration.

  • Fits 2008–2021 Subaru WRX and WRX STI
  • Also fits 2018 Subaru STI Type RA and 2019 Subaru STI S209
  • Reduces differential flex and torque twist
  • Proprietary polyurethane bushing with 94A durometer
  • Resists extreme temperatures, oils, water, and coolant
  • Product code: CB-4297K
  • References: COBB Rear Differential Subframe Mount Bushing Insert product page

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