Is it worth it over rebuilding my old diff?

If your housing or ring-and-pinion is damaged, a complete assembly is usually cheaper and faster than a rebuild. If only a seal is leaking, a rebuild or reseal is the better value.

Will it fit my 2012 RZR S 800?

Yes. It is listed for 2011–2014 RZR 800, RZR 4 800 and RZR S 800 rear applications. It does not fit 900, 1000, XP or Turbo models.

What fluid does it take?

Use Polaris Demand Drive or an equivalent gear lube for the rear diff and fill to the specified level. Fluid is typically not included, so buy it separately.

Does it come with new seals and hardware?

It ships as the gearbox assembly. Seals are usually installed, but check the listing for axle seals and mounting hardware before you start the job.

Prices on this part move with seller stock and season, and the current best price is already near the low end of its recent range. Compare across stores before buying.

Polaris RZR 4 800 800S S Rear Back Differential Gearbox Assembly 3235281

Last price we saw

$679.99at eBay, last seen Oct 31

Prices change often: ask the agent below to check today's price at every store.

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Our take on the Polaris RZR 4 800 800S S Rear Back Differential Gearbox Assembly 3235281

This is a complete rear differential gearbox assembly for 2011–2014 Polaris RZR 800, RZR 4 800 and RZR S 800 side-by-sides, sold under Polaris part number 3235281. It is a drop-in replacement for a failed or noisy rear diff, not an upgrade. The unit is made in China, so it is an aftermarket or value-line part rather than a factory-assembled US unit. Its latest best price sits at the low end of its recent range, which fits a part of this type.

Best forOwners of a 2011–2014 RZR 800 with a whining, leaking or locked rear diffRiders replacing a cracked housing or stripped ring-and-pinion

Polaris RZR 4 800 800S S Rear Back Differential Gearbox Assembly 3235281

Last price we saw

Ask our shopping agent

Our take on the Polaris RZR 4 800 800S S Rear Back Differential Gearbox Assembly 3235281

Polaris RZR 4 800 800S S Rear Back Differential Gearbox Assembly 3235281

Last price we saw

Ask our shopping agent

Our take on the Polaris RZR 4 800 800S S Rear Back Differential Gearbox Assembly 3235281