Internal Spider Gear Kits

Spider Gear Differential Kit

If the gears in your open differential have gone bad, these kits will get you back on the road. What are spider gears? Sometimes called pinion gears or side gears, these 4 gears work in tandem with the mating differential parts to take the rotational energy the driveshaft generates and direct it to the wheels.

You can tell the gears are broken if you hear grinding, rattling or banging from the rear as you turn. With our internal spider gear kits, you will save money by just swapping the gears rather than the whole differential. Changing them quickly prevents damage to the rest of the differential that would lead to more extensive repairs.

OE-Fit Internal Gears

We develop and manufacture replacement spider gear kits for an assortment of popular factory axle differentials, including the Dana 35, GM 8.6, Chrysler 9.25 and Ford 8.8. Each kit includes the spider gears, side gears, washers and hardware for installation. It is important to replace all new gears, as pairing new spider gears with old side gears can throw the setup out of balance and cause further issues.

Revolution Gear & Axle differential spider gear sets have a one-year limited warranty. Select a kit to confirm whether it fits your vehicle and contact us if you have questions.