Crankshaft Oil Seal Kit for Polaris Indy Ultra 680 1996-1998 SP SPX SKS RMK

Crankshaft/Crank Oil Seal Kit for Polaris Indy Ultra 680

This crankshaft oil seal kit for Polaris Indy Ultra 680 models from 1996 to 1998 supplies the seals needed to restore proper crankcase sealing on SP, SPX, SKS, and RMK snowmobiles.

Overview

This crank oil seal kit for Polaris Indy Ultra 680 sleds contains the seals required to reseal the crankshaft ends and keep crankcase pressure where it belongs. A worn crank seal lets air leak into the crankcase, which leans out the fuel mixture and robs performance. This kit is for riders and mechanics rebuilding or freshening the bottom end of a Polaris 680 triple.

Built For Performance

• Direct replacement seals sized for the Polaris 680 crankshaft
• Constructed to hold crankcase pressure under high rpm operation
• Resists heat, oil, and fuel exposure common in two stroke engines
• Sold as a complete kit so both crank ends can be resealed at once
• Fits Indy Ultra 680 SP, SPX, SKS, and RMK variants from 1996 to 1998

Fits These Machines

• for Polaris Indy Ultra 680 SP 1996-1998
• for Polaris Indy Ultra 680 SPX 1996-1998
• for Polaris Indy Ultra 680 SKS 1996-1998
• for Polaris Indy Ultra 680 RMK 1996-1998

On-The-Job Use

• Crankcase resealing during a top or bottom end rebuild
• Correcting air leaks that cause a lean running condition
• Freshening the bottom end before a season of trail or mountain riding
• Routine replacement when the engine is already apart

Specs At A Glance

Good To Know

Q: Do I need to split the cases to install these seals? A: On many Polaris 680 engines the crank seals can be replaced from the outside, but always check your service manual for your exact model and year.

Q: How do I know my crank seals are leaking? A: Common signs include a lean running condition, erratic idle, hard starting, or oil weeping around the crank ends.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.