Features/FAQs
Replacement tapered roller bearing cup for the countershaft extension rear, or input pocket race in matching BorgWarner / Tremec T56 6-speed manual transmissions. Replaces a worn or pitted outer race during repairs for bearing noise, gear whine, or excessive countershaft play. Includes one outer race only; LM12749 bearing cone sold separately.
Fits T56 Gearboxes In:
- 1993–2002 Chevy Camaro Z28/SS
- 1993–2002 Pontiac Firebird Trans Am
- 1997–2004 Chevy Corvette C5/Z06
- 1992–2006 Dodge Viper
- 2003–2004 Ford Mustang SVT Cobra "Terminator"
- 2004–2006 Pontiac GTO
- 2004–2006 Dodge Ram SRT-10
- 2004–2007 Cadillac CTS-V
- 2005–2006 Chevy SSR
Dimensions: - Outside diameter: 1.8100" / 45.974 mm
- Cup width: 0.4750" / 12.065 mm
OEM / Original Transmission Reference: 1386-133-003 / 13-86-133-003
GM Reference: 88894092.
Interchange: LM12711; aftermarket catalog reference 394260-3.
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