Description

Kawasaki Mule SX 4×4 LE FJ400 Engine 2016–2025

Bring your Kawasaki Mule SX 4×4 LE FJ400 Engine back to life with a rebuild from REV6. Our process combines expert machining, upgraded components, and strict quality checks. Because of this, you get the reliability and strength your Mule needs for years of use. Every engine also includes a 1-Year Warranty and free nationwide shipping for peace of mind.

Premium Rebuild Features

• Core Inspection – Complete tear-down and review before work begins.
• Crankshaft & Rod Checks – Inspected for strength and durability.
• Cylinder Bore Service – Trued, straightened, and crosshatched for lasting performance.
• New Pistons & Rings – Installed to restore compression and power.
• Full Gasket Kit – Ensures tight, leak-free seals across the rebuild.
• Fresh Oil Seals – Keep lubrication where it belongs.
• Valve Guide Seals – Improve efficiency and reduce oil consumption.
• Head & Valve Service – Valves ground and lash set for accuracy.

Core Requirement

A rebuildable core must be provided before shipment, or a refundable core charge applies. Once your good core arrives, we finish your rebuild and prepare it for delivery. This system keeps your turnaround smooth and efficient.

Why Choose REV6?

Our engines are hand-assembled by skilled technicians and double-checked for accuracy. In addition, our decades of experience mean we know what it takes to outperform factory builds. For added clarity on the process, visit our FAQ or see more details in the Help Center.

Take Action Today

Order your Kawasaki Mule SX 4×4 LE FJ400 rebuild today and get back to dependable performance. Browse our Engine Rebuild Kit Guide for more options or contact us for help choosing the right fit. Nationwide shipping comes standard.

Thank you for choosing REV6 to handle your rebuild. We value your trust and work hard to keep your Mule running strong.