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Perrin Rear Differential Cover for 2002-07 WRX & STi 04-09
Perrin Performance differential cooling for WRX & STi
Perrin Performance WRX & STi rear differential cover
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The rear differential is a expensive part to replace, so it is important to keep differential oil temperatures cool for a prolonged life. Under harsh conditions like autocross or track racing, your differential fluids heat up and start to break down. The Perrin STi Rear Differential Cover is designed to keep these fluids at a safe temperature with enlarged cooling fins to dissipate heat. It is constructed of heat-treated cast aluminum, and will hold 30% more oil than your stock rear differential cover. The Perrin WRX & STi Rear Differential Cover is a great upgrade for the weekend racer, and anyone looking to add some style to their STi.
Shipping costs are calculated upon checkout
FITMENT: 2002-07 WRX & 04-09 STi. The WRX and STi require different part numbers, please choose accordingly below.

Description: Part #: MSRP: Price: Inventory:
STi Rear Differential Cover paPSP-SUS-510
$270
$251
6 in stock
WRX Rear Differential Cover paPSP-SUS-515
$270
$251
6 in stock
Redline 75w90 GL-5 Gear Oil With Friction Modifiers for the STi Rear Differential.
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