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3 Stainless Support Rings
This material
PDI Big Boss performance radiators for Peterbilt 389 models feature a dimpled tube design to allow coolant more time to cool properly for more demanding applications
OEM Cross Reference 4954434
PDI Big Boss™ Cryo‑Treated Cummins N14 Head Bolt Kit 22186468 3 Stainless Support RingsAvailable for: Cummins N14 Engines Key Benefits Maximum clamping force Superior fatigue resistance Thermal Stability Corrosion Protection Ready to Install Kit Warranty: 1 Year Unlimited Mile Warranty Upgrade cylinderhead integrity and lock in longterm performance with PDIs premium cryogenictreated head bolt kit. Engineered for heavyduty powerhouses that run harder and longer, every bolt is precisionmachined, deepfrozen to 300 F, and slowly tempered
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