Transmission System | SPELAB

25 Products

Filter products

show 25 collections

Transmission System FAQS

Four categories: Differential Covers (20 products), Transmission Pans (3), Thermal Bypass Valves (1), and Transmission Line Kits (1). Covers span Ford, GM, and Dodge Ram platforms.

Thick cast aluminum or iron construction adds cooling fins that lower differential oil temperature by 15–25°F during heavy towing. Internal baffles prevent fluid starvation on inclines.

Ford 9.75" 12-bolt covers fit F150 (1997–2017). Ford 10.25"/10.5" 12-bolt covers fit F250/F350 Super Duty (1986–2024). Dana M275 14-bolt fits 2017+ Ford F250/F350.

6R140 aluminum pan for 2011–2019 6.7L Powerstroke includes cooling fins and drain plug. 5R110 deep-sump steel pan for 2003–2010 6.0L/6.4L Powerstroke improves lubrication under hard acceleration.

Regulates transmission fluid temperature in extreme conditions. Prevents overcooling in cold weather and maintains optimal operating temps during heavy towing or performance driving.