Description
This OEM GM rear main seal is a direct replacement for all 6.6L Duramax engines from 2001–2025, including LB7, LLY, LBZ, LMM, LML, and L5P.
Manufactured to GM factory specifications, this seal is designed to prevent rear crankshaft oil leaks, ensuring long-lasting performance under the high demands of diesel operation.
A must-have part during engine overhauls, crankshaft replacement, or when repairing rear main seal leaks.
Features & Benefits:
– Genuine GM factory part – same seal installed on new engines
– Designed for precise fitment and long-term oil sealing
– Durable construction withstands extreme heat and crankshaft speed
– Trusted by GM dealers and professional diesel technicians
– Compatible with all Duramax engine generations (LB7–L5P)
Fitment Applications:
2001–2025 Silverado/Sierra 2500HD & 3500HD LB7/LLY/LBZ/LMM/LML/L5P
OEM Part Numbers & Cross References:
GM Part #: 97209342
UPC: 195491151819
Installation Tip:
– Rear main seal replacement requires removal of the transmission and flywheel/flexplate
– Always inspect the crankshaft surface for wear or scoring
– Recommended to install with proper seal driver and torque specs per GM service manual
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