Restore horsepower, compression and fuel economy to that tired engine with one of our factory replacement heads. Matches original performance flow. Cast #117 & 403.
Valves, valve springs and r...
Restore horsepower, compression and fuel economy to that tired engine with one of our factory replacement heads. Matches original performance flow and is available as a complete ready-to-install un...
Restore horsepower, compression and fuel economy to that tired engine with one of our factory replacement heads. Matches original performance flow. Cast # 0331, 0630 & 7120.
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These...
Promaxx Performance extends its reach into the Jeep market with a Stroker Crankshaft for the inline 6-cylinder 4.2L engines. Internally balanced and machined to factory specifications, this crank i...
Save time and money with Promaxx Cylinder Head with Valves, engineered as direct replacement for the CJ, Wrangler and Cherokee models. For the 4-Cylinder, 2.5L engine, this cast-iron head is shippe...
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Installation Notes
Installation Difficulty:
Level 3 Advanced
Installation Time: 1-2 hours
Parts Included
Connect Bearing Rod
Warranty
Minimum 5 Year Limited Warranty.
...
Learn More
Installation Notes
Installation Difficulty:
Level 3 Advanced
Installation Time: 1-2 hours
Parts Included
Connect Bearing Rod
Warranty
Minimum 5 Year Limited Warranty.
...
Learn More
Installation Notes
Installation Difficulty:
Level 3 Advanced
Installation Time: 1-2 hours
Parts Included
Connect Bearing Rod
Warranty
Minimum 5 Year Limited Warranty.
...
Learn More
Installation Notes
Installation Difficulty:
Level 3 Advanced
Installation Time: 1-2 hours
Parts Included
Connect Bearing Rod
Warranty
Minimum 5 Year Limited Warranty.
...
Learn More
Installation Notes
Installation Difficulty:
Level 3 Advanced
Installation Time: 1-2 hours
Parts Included
Connect Bearing Rod
Warranty
Minimum 5 Year Limited Warranty.
...
Learn More
Installation Notes
Installation Difficulty:
Level 3 Advanced
Installation Time: 1-2 hours
Parts Included
Connect Bearing Rod
Warranty
Minimum 5 Year Limited Warranty.
...
Learn More
Installation Notes
Installation Difficulty:
Level 3 Advanced
Installation Time: 1-2 hours
Parts Included
Connect Bearing Rod
Warranty
Minimum 5 Year Limited Warranty.
...
The Crown Automotive Crankshaft Pulley is a single groove v-belt replacement for the 4 cylinder F and L-Head engines. When you are rebuilding your CJ engine it is important to have the right parts ...
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Installation Notes
Installation Difficulty:
Level 3 Advanced
Installation Time: 1-2 hours
Parts Included
Connect Bearing Rod
Warranty
Minimum 5 Year Limited Warranty.
...
Learn More
Installation Notes
Installation Difficulty:
Level 3 Advanced
Installation Time: 1-2 hours
Parts Included
Connect Bearing Rod
Warranty
Minimum 5 Year Limited Warranty.
...
Learn More
Installation Notes
Installation Difficulty:
Level 3 Advanced
Installation Time: 1-2 hours
Parts Included
Connect Bearing Rod
Warranty
Minimum 5 Year Limited Warranty.
...
Learn More
Installation Notes
Installation Difficulty:
Level 3 Advanced
Installation Time: 1-2 hours
Parts Included
Connect Bearing Rod
Warranty
Minimum 5 Year Limited Warranty.
...
Learn More
Installation Notes
Installation Difficulty:
Level 3 Advanced
Installation Time: 1-2 hours
Parts Included
Connect Bearing Rod
Warranty
Minimum 5 Year Limited Warranty.
...
Learn More
Installation Notes
Installation Difficulty:
Level 3 Advanced
Installation Time: 1-2 hours
Parts Included
Connect Bearing Rod
Warranty
Minimum 5 Year Limited Warranty.
...
Learn More
Installation Notes
Installation Difficulty:
Level 3 Advanced
Installation Time: 1-2 hours
Parts Included
Connect Bearing Rod
Warranty
Minimum 5 Year Limited Warranty.
...
Looking to replace your cylinder head stud because it's missing, broken or rusty? This Grade 8 cylinder head stud offers a direct replacement and fits 134 cubic inch L-head engines. Fifteen require...
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Installation Notes
Installation Difficulty:
Level 3 Advanced
Installation Time: 1-2 hours
Parts Included
Connect Bearing Rod
Warranty
Minimum 5 Year Limited Warranty.
...
Learn More
Installation Notes
Installation Difficulty:
Level 3 Advanced
Installation Time: 1-2 hours
Parts Included
Connect Bearing Rod
Warranty
Minimum 5 Year Limited Warranty.
...
