421000076 Crankshaft Assembly for Sea-Doo Challenger 800 1996-1997

Crankshaft Assembly for Sea-Doo Challenger 800

This crankshaft assembly is a complete replacement unit for the Sea-Doo Challenger 800, cross-referenced to OEM part number 421000076, and it restores the rotating core that transfers piston power into drive output on the 800 engine.

Overview

This crankshaft assembly is a direct-fit replacement component built for the Sea-Doo Challenger 800 across the 1996 to 1997 model years. The crankshaft assembly carries OEM reference 421000076, so it serves riders and mechanics who need to rebuild or replace a worn bottom end. It suits anyone restoring an 800 engine that has suffered bearing wear, rod damage, or seized journals.

Built For Performance

• Complete assembly with connecting rods and bearings pressed and aligned
• Machined journals sized to OEM 421000076 specifications
• Balanced rotating mass to reduce vibration at high RPM
• Hardened surfaces for resistance to wear under sustained load
• Direct replacement for the factory crankshaft on the 800 engine

Fits These Machines

• for Sea-Doo Challenger 800, 1996
• for Sea-Doo Challenger 800, 1997

On-The-Job Use

• Bottom-end rebuilds after bearing or rod failure
• Full engine overhauls on the 800 powerplant
• Restoring a stored or non-running Challenger 800
• Replacing a scored or seized crankshaft

Specs At A Glance

Good To Know

Q: Does this crankshaft assembly come with rods and bearings already installed? A: It is offered as a complete crankshaft assembly, so the rods and bearings are included as one unit. Confirm the listing details match what your rebuild requires before ordering.

Q: Will it fit any 800 engine besides the Challenger? A: Fitment is tied to the Sea-Doo Challenger 800 for 1996 to 1997 and OEM reference 421000076. Verify your engine serial number and part number against this assembly before purchase.

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