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• Please read the entire instruction manual before proceeding. • Ensure all components listed are present. • If you are missing any of the components, call customer support at 951-493-7100. • Ensure you have all necessary tools before proceeding. • Ensure that your vehicle is cooled off before proceeding. •...
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Note: Your vehicle must be completely cooled off before proceeding with the installation. 1. Park your vehicle on a flat, dry surface. You will need to block the tires to prevent the vehicle from rolling. Note: You will need to get under the truck to do this installation. Please use every precaution when lifting the vehicle.
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5. Allow all of the gear oil to drain from the differential. 6. Remove the remaining bolt from the top of the differential cover and remove the cover from the housing. 7. Use a clean, lint free rag to wipe down the remaining gear oil from the housing. 8.
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10. Lightly coat the supplied O-Ring with oil and install onto the provided aFe differential cover.
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11. Hold the aFe differential cover into position, aligning the screw holes. Install one (1) of the supplied 5/16" – 18 x 1.0 socket head screws and flat washers at the top of the cover to hold it in place. 12.
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15. Install the supplied M12 x 1.25 drain plug and crush washer into the bottom of the cover (secure about ½ turn past finger tight).
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17. Using the top fill port, fill the aFe differential cover with new gear oil. Fill until gear oil runs out of the 1/8" NPT port on the side of the cover (about 5 quarts). Note: If your vehicle is lifted and your axle has been rotated, you will have to verify you have the correct oil level for your vehicle.
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19. Apply Teflon tape/pipe sealant and install the supplied 3/4" NPT 6" Deep Reach plug into the top of the cover. Note: If using a temperature sensor, install it instead of the 1/8” NPT plug. 20. Apply Teflon tape/pipe sealant and install the second supplied 1/8" NPT plug into the top of the cover.
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