aFe Power Rear Differential Cover (46-70302) fits 12 bolt axles on 2015–2017 GM Colorado and Canyon, delivering enhanced cooling, protection, and fluid capacity. Constructed from rugged A356-T6 sand-cast aluminum, this differential cover features reinforcing ribs for strength and built-in external fins that improve heat dissipation. The wrinkle-black powder-coated finish with machined fins offers a sleek, durable look. It also includes a large oil level sight glass with a 1/8" NPT calibration plug to prevent overfilling, along with magnetic drain and fill plugs to capture metal particles for improved differential longevity. With a 2-quart lube capacity—more than stock—this cover provides serious performance and protection.
Key Features :
Fits GM Colorado/Canyon 12 bolt axles from model years 2015–2017
Made of heavy-duty A356-T6 sand-cast aluminum with reinforcing ribs
Includes magnetic drain and fill plugs to trap metal particles
Large sight glass with calibration plug for proper fluid level
Features built-in external fins for improved cooling
Durable wrinkle-black powder-coated finish with machined accents
Increases fluid capacity to approximately 2 quarts for better lubrication
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