SKU: BMM70391
UPC: 019695703912
MPN: 70391
The Automatic Transmission Pan Deep Chevy Gen III by B and M AUTOMOTIVE is engineered for serious transmission builders and performance enthusiasts who demand greater fluid capacity and heat dissipation from their Chevy LS-powered builds. This deep-sump design addresses one of the most critical cooling bottlenecks in high-output applications: inadequate transmission fluid volume. Whether you're running a heavily modified engine, towing heavy loads, or pushing sustained power figures that stress stock cooling systems, this transmission pan upgrade delivers the thermal margin your transmission needs to survive.
The deep-pan geometry increases fluid capacity significantly beyond OEM specs, allowing the transmission fluid to absorb and retain heat longer before recycling through the cooler. This extended dwell time in the pan lowers bulk fluid temperature and reduces thermal stress on clutch materials, seals, and valve body electronics. The B and M design maintains proper ground clearance for most suspension configurations while the reinforced pan structure resists deformation under high-pressure transients. Quality construction and precise fitment ensure a leak-free seal when paired with the OEM gasket surface, and the added mass (12.72 lbs) provides structural rigidity that prevents flex during aggressive shifts or off-the-line acceleration.
This transmission pan is ideal for owners of Gen III Chevy engines running Turbo 400, 700R4, or modern LS-based transmissions who operate in high-heat environments—track days, desert racing, or continuous towing duty. Direct fitment to Chevy Gen III platforms eliminates custom fabrication, and the dimensions (15.95 x 5.35 x 23.05 inches) confirm compatibility with factory mounting points. Installation requires no modifications to transmission or engine bay, making this a bolt-on upgrade that any competent mechanic can install in under an hour. Pair this pan with a quality transmission cooler and you've built a bulletproof cooling system that protects your investment during max-effort driving.
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