BOLD MAGENTA part numbers are new for 2026 DRAGSPECIALTIES.COM 2026 | TIRE & SERVICE V-TWIN TOOLS 674 PART # DESCRIPTION FOR ALL M-EIGHT AND TWIN CAM 3801-0450 Piston cooling jet pressure tester block complete kit PART # DESCRIPTION FOR ALL M-EIGHT AND TWIN CAM (CONT) 3801-0448 Piston cooling jet pressure tester block tool PISTON COOLING JET PRESSURE TESTER BLOCKS • Allows user to test all M-Eight and Twin Cam piston cooling jets •Leaking piston cooling jets can send too much oil into the crankcase, causing high engine oil sump levels •Clogged cooling jets can reduce or eliminate lubrication to the pistons and cylinders •Helps diagnoise or prevent issues prior to finishing up an engine build PART # DESCRIPTION 3801-0456 For all M-Eight and Twin Cam ASSEMBLED ENGINE PISTON COOLING JET PRESSURE TESTER • Allows you to test all Twin Cam and M-Eight piston cooling jets while the top end is still assembled •Can also be used with the top end disassembled to check for leaks at the piston cooling jet gasket or as a preemptive check while building an engine •Great preemptive check while installing a camshaft or oiling system to ensure the piston cooling jets are operating properly •Leaking or prematurely releasing piston cooling jets can cause high engine case oil levels (sump) and lower oil pressure to your lifters bores •Piston cooling jets that fail to pop off will reduce piston lubrication leading to increased heat and wear • With this tool, you’ll be able to verify operation prior to start up or to help diagnose an issue •Made in the U.S.A. PART # DESCRIPTION 3801-0025 Top dead center tool for use w/ 12 mm spark plug hole TOP DEAD CENTER TOOL •Tool makes it easy to find exact top dead center of any engine •Invaluable when dialing in cams or performing any of a number of checks and modifications based on the position of the crankshaft •Available for engines with 12 mm spark plug holes •Made in the U.S.A. PART # DESCRIPTION 3801-0411 For 18-21 M-Eight PISTON JET TEST STAND •Helps determine if piston jet is stuck open or stuck closed •Assists engine rebuilder to clear jet of all assembly lubes; verifies psi number the jet switches to “on” and visualizes spray pattern before cases are sealed •Does not include piston jet shown in picture •Made in the U.S.A. •Complete kit PART #3801-0450 includes a tool plate, gauge, regulator and hardware •Stand alone tool version PART #3801-0448 includes a tool plate and fasteners to affix to Feuling® camplate psi tester tool PART #3801-0071 sold separately on page 673 •Made in the U.S.A. 3801-0450 3801-0448
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