4L30E, AR25, AR35, A4S 270R

Symptoms:

• Leaking front seal
• Burnt band (GM)
• Bushing wear

Cause:
Normal wear and tear; replacement aftermarket bushings are too loose.

Correction:
Replace the worn bushing with this new more tightly toleranced bushing.

The bell housing bushing on GM 180C, 4L30-E and AR25, AR35 transmissions becomes worn due to normal wear. Excessive clearance between the bell housing bushing and the converter hub will cause a front seal leak. Simply replacing the metal-clad seal will not fix the problem. Current aftermarket bushings do not fit the converter hub tightly enough and can have more clearance than a worn OE bushing. This Sonnax bell housing bushing is designed to fit the converter hub properly and eliminate front seal leakage.

• More tightly toleranced than aftermarket bushings
• Prevents costly bell housing replacement

Specifications:

• Bushing Style: Precision
• Material: Steel-backed aluminum
• Width: 0.560"
• Shaft Dia.: 1.874"
• Housing Bore: 2.003"

SONNAX Installation Instructions