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Start ShoppingProX 42.6320 Crankshaft Seal Kit - Durable Rubber Seals for Reliable Engine Performance
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Description
Ensure optimal engine performance with ProX's premium crankshaft seal kit (42.6320). These durable rubber seals with steel reinforcements are engineered to prevent leaks, reduce wear, and extend engine life for riders who demand reliability on and off the track.
Key Features
- High-Quality Rubber Seals: Resistant to heat, oil, and abrasion for long-lasting performance in harsh riding conditions.
- Steel Reinforcements: Added durability to withstand high RPMs and extreme temperatures without cracking or deforming.
- Multiple Seal Configuration: Includes 4-6 seals (quantity varies by model) for comprehensive engine sealing solutions.
- Lightweight Design: Only 0.1 lbs (kit) for easy installation without adding unnecessary engine weight.
Why Choose This Product
ProX crankshaft seal kits are trusted by mechanics and riders alike for their precision engineering and compatibility with major powersports engines. The combination of flexible rubber and steel reinforcement creates a perfect seal that prevents oil leaks, reduces maintenance costs, and keeps your engine running smoothly through demanding rides. Whether you're tackling off-road trails or high-speed track events, this kit ensures your engine stays protected and performs at its best.
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Ensure optimal engine performance with ProX's premium crankshaft seal kit (42.6320). These durable rubber seals with steel reinforcements are engineered to prevent leaks, reduce wear, and extend engine life for riders who demand reliability on and off the track.
Key Features
- High-Quality Rubber Seals: Resistant to heat, oil, and abrasion for long-lasting performance in harsh riding conditions.
- Steel Reinforcements: Added durability to withstand high RPMs and extreme temperatures without cracking or deforming.
- Multiple Seal Configuration: Includes 4-6 seals (quantity varies by model) for comprehensive engine sealing solutions.
- Lightweight Design: Only 0.1 lbs (kit) for easy installation without adding unnecessary engine weight.
Why Choose This Product
ProX crankshaft seal kits are trusted by mechanics and riders alike for their precision engineering and compatibility with major powersports engines. The combination of flexible rubber and steel reinforcement creates a perfect seal that prevents oil leaks, reduces maintenance costs, and keeps your engine running smoothly through demanding rides. Whether you're tackling off-road trails or high-speed track events, this kit ensures your engine stays protected and performs at its best.
| SKU | GM59EE3C29 |
|---|---|
| MPN | 42.6320 |
| Brand | ProX |
| Category | Gaskets/Seals |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Kawasaki | KX250F | 2004-2009 |
| Kawasaki | KX450F | 2006-2010 |
| Suzuki | RMZ250 | 2004-2008 |
| Suzuki | RMZ450 | 2005-2009 |
| Yamaha | YZ250F | 2003-2007 |
| Yamaha | YZ450F | 2004-2008 |
Frequently Asked Questions
Yes, the ProX 42.6320 is a complete crank seal kit with all seals required for the listed models.
ProX seals are made to OEM specs using high-quality materials, often lasting longer than stock.
Yes, crank seals typically require splitting the crankcases for proper installation.
Verify fitment against your exact year/make/model. ProX provides precise compatibility lists.
Installation Guide
Difficulty
Medium
Est. Time
1 hr 0 min
Tools Required
- socket set
- torque wrench
- seal puller/installer
- case splitter if needed
Pro Tips
- Clean all mating surfaces thoroughly
- Use seal protectors during install
- Apply light oil to seal lips before assembly
Common Mistakes to Avoid
- Not splitting cases properly
- Damaging new seals during installation
- Incorrect torque on crank bolts
Comparison vs Stock/OEM
Direct replacement for OEM crank seals
Improvements
- Higher grade rubber for better heat/oil resistance
- More precise fit tolerances
- Lower cost than dealer OEM
Considerations
- Identical performance to stock, no power gains
Durability & Warranty
Expected Lifespan
Matches or exceeds OEM (50+ hours motocross use)
Warranty
1 year limited manufacturer warranty
Maintenance
Inspect during engine rebuilds; no routine maintenance needed
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