Heavy-Duty Diesel Parts
Built To Keep You Moving
OEM cross references, performance cylinder heads, and rebuild kits for Caterpillar, Cummins, Detroit, Mack, Volvo, Paccar & International engines — backed by real diesel techs, not a call center.
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Featured Categories
Browse heads, turbos, rebuild kits, and other heavy-duty diesel parts with current product availability.
Shop By Engine
Browse heads, kits, injectors, turbos, bearings, and seals by engine platform.
C12 · C7
ISM · ISL
DD15 · DD16
D11 · D13 · D16
PX-9 · PX-7
A26 · DT466
JAK'S Performance Heads
Compare available performance head configurations, current pricing, and fitment with a diesel specialist.
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DIESEL
Cross a number now
Search the catalog by OEM, dealer, or competitor number. Results are candidates; confirm fitment and availability on the product page or with a specialist.
Why Buy From JAK'S Diesel
Diesel Expertise
Real engine knowledge from techs who've turned the wrenches — not order-takers.
Fast Shipping
Check each product for current availability and same-day shipping eligibility.
Technical Support
Speak with experienced diesel professionals before and after the sale.
Quality Products
Brand, condition, and specifications are shown on each product page.
Warranty Protection
Warranty coverage varies by product and manufacturer; review the applicable terms before ordering.
We Serve
Whoever keeps diesel moving — find your account and the pricing built for it.
Can't Find It? We Will.
Send us the number off the part — text a photo of the tag. A diesel specialist will track it down.