Pay in 4 interest-free payments of $299.49 Learn more
Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
Upgraded governor spring for improved performance
mandrel-bent aluminized steel tubing for maximum flow and uses high quality band clamps and OE-style bayonet hangers
The lower activation temperature allows coolant to flow through the engine earlier
you'll find our iconic Diesel Freak logo outlined in a striking blue and yellow color combination
It’s the best fluid we’ve found
03-06 6.0L CNC Fab 18mm Stage 1 Cylinder Head Set - 421020 TJ Upgraded governor spring for improvedCNC Fabrication Model 421020 Upgrade your 03 06 6. 0L Powerstroke with these CNC Fabrication, LLC stage 1 stock replacement o ringed cylinder heads. CNC Fabrication Stage 1 stock replacement 18mm dowel cylinder heads for 2003 2006 6. 0L Powerstroke. FEATURES: In house Machined on our Sunnen seat & guide machine to exceed OEM specifications using the latest tooling Brand new upgraded castings to prevent areas known in the factory heads from cracking O
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