Description

Kawasaki Mule SX FI 4×4 XC FJ400 Engine 2019–2023

If your Kawasaki Mule SX FI 4×4 XC FJ400 Engine needs renewed reliability, trust REV6 for precision rebuilds. We use premium parts and hands-on craftsmanship to deliver lasting performance. Moreover, every rebuild includes a 1-Year Warranty and free nationwide shipping—so you’re completely taken care of.

Rebuild Highlights

• Core Inspection – Full evaluation before rebuild to ensure quality.
• Crankshaft & Rod Check – Confirms structural integrity for heavy-duty use.
• Cylinder Bore Service – Trued, straightened, and cross-hatched for a snug fit.
• New Pistons & Rings – Restores compression and smooth engine response.
• Full Gasket Kit – Completes the seal to prevent leaks.
• New Oil Seals – Ensure lasting protection against leaks.
• Valve Guide Seals – Enhance lubrication and reduce wear.
• Valve & Head Service – Includes precision grinding and lash setting.

Core Requirement

You must provide a rebuildable core to complete your order. If you’re not able to send one now, a refundable core charge applies. Once your core arrives in good condition, we proceed promptly with the rebuild.

Why Choose REV6?

Our team hand-assembles each engine and then performs a second quality inspection to ensure excellence. As a result, your rebuild often outperforms factory-standard units. For more info on shipping or warranty, visit our FAQ or Help Center.

Ready to Order?

Order your rebuild today and get your Mule back on the trail with confidence. Nationwide shipping and warranty are included in the package. Need assistance choosing the right option? Check our Engine Rebuild Kit Guide or Contact Us.

Thank you for trusting REV6 with your engine. We’re committed to delivering performance that lasts, mile after mile.