MAHLE Original Engine Kit Gasket Set 6.6L GM Duramax 29004BL Shift Improver Kit for 65-87

Shift Improver Kit for 65-87 TH400 Transmission

and hardware are included for hassle-free installation

Performance Gains: Outflows factory manifold by up to 12%

Not all wideband gauges are created equal

MAHLE Original Engine Kit Gasket Set 6.6L GM Duramax 29004BL Shift Improver Kit for 65-87Product Description: Engine Gasket Set Full 6. 6 L GM Duramax MAHLE Performance boasts the most extensive line of performance engine bearings in the market hands down. Combining the legendary CLEVITE bearing brand for domestic applications with the global coverage in the MAHLE brand for the import market, MAHLE Performance truly is the engine bearing of choice in the performance bearing market. CLEVITE engine bearings have been winning NASCAR