Old-Style PTO Small Crank Seal for Raptor Engines

• Precision-molded for small crank PTO shafts in older Raptor designs.
• Prevents oil escape and debris entry, safeguarding internal components.

This seal, SKU 555166 and superseded by 393812, fits snugly to eliminate leaks that rob your engine of efficiency. In racing, where every RPM counts, a dry crankcase means lost power— this part ensures lubrication stays put, allowing smoother rotation and higher rev limits.

Simple yet critical, it's the unsung hero during long motos, cutting maintenance needs and boosting reliability for back-to-back sessions.

Frequently Asked Questions

Q: Is this seal compatible with my Raptor engine?

A: Yes, this is a precision-molded seal specifically designed for the small crank PTO shafts found in older Raptor engine designs. Please note that this part (SKU 555166) has been superseded by part number 393812.

Q: Why is it important to replace a worn crank seal?

A: A worn seal allows oil to leak and debris to enter the crankcase. In racing, maintaining a sealed crankcase is critical for engine efficiency; even minor leaks can rob your engine of power and lead to premature wear of internal components.

Q: Do I need any special tools for installation?

A: While the installation is straightforward, ensure the PTO shaft surface is clean and free of burrs before pressing the new seal into place. Using a proper seal driver or a socket of the correct diameter will help ensure the seal sits flush and square to prevent future leaks.

Q: How often should I check my crank seals?

A: It is recommended to inspect your crank seals during your routine engine maintenance intervals, especially before major race events or after long sessions, to ensure your engine remains reliable and performing at its peak.

Related Products From Vendor

• Briggs & Stratton Raptor Flathead 397135 Choke-Style Carburetor - 5HP L-Head - Unrestricted Racing
• Reliable Old-Style Recoil Starter for Briggs Raptor Karts
• Pack of 10 Precision 035 Top Rings for Raptor Engines
• Briggs & Stratton Raptor .015" Top Piston Rings (10-Pack) - Flathead Racing
• Bulk 10-Pack .025" Top Rings for Oversized Raptor Piston Applications