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Show your support with a Thoroughbred Diesel t-shirt, sweatshirt, or sticker decal.
Thoroughbred Sku #: IISPDM-12VSTKH-FR-CRE
Year/Make/Model: {{year}} {{make.Name}} {{model.Name}} Edit
$1,820.64 On Sale! $1,618.47
Terms & Conditions for Cores
Many stock replacement parts such as turbos, injectors, injection pumps, and high pressure oil pumps have a core charge that is associated with the new replacement part. You must return the old part to receive a refund on the core charge.
If you plan on returning your core you have two options.
Thoroughbred Diesel offers defer the upfront core charge when purchasing via credit card payment.
OPTION 1: You can accept the core charge, which means you will be charged for the part AND the core at time of purchase. You still have the option to send it back, and if you do, the core will be refunded back on the card used, presuming the core meets core criteria and the core is returned within 30 days from the time your order is received. If you return your core after 30 days you may refer to the Core Charge Timeline below as to how you will be refunded.
Core Charge Timeline
OPTION 2: You can defer the core charge. If you defer, you will not be charged for the core at the time of purchase. You will have 21 days from the time your order is received to send the core back. If the core is not received within the 21 days, your credit card will be charged for the core amount on your order. If you return your core after 21 days, you may refer to the Core Charge Timeline below as to how you will be refunded. When Core deferral (Pay Core Charge Later) is limited to payment by credit card only. ***When using PayPal or Affirm as your method of payment “Core Deferral (Pay Core Charge Later)” is not available. The core must be paid at time of purchase. ***
Core Return Procedure
1989 - 1993 Dodge D250
1989 - 1993 Dodge D350
1989 - 1993 Dodge W250
1989 - 1993 Dodge W350
1994 - 1998 Dodge Ram 2500
1994 - 1998 Dodge Ram 3500
Product Name: Industrial Injection Premium Stock Plus Cylinder Head w/Fire Ring Grooves - 89-98 Dodge Ram 2500/3500 Cummins 5.9L 12V Manufacturer: Industrial Injection Manufacturer Part #: PDM-12VSTKH-FR Thoroughbred Diesel Part #: IISPDM-12VSTKH-FR Fitment Notes: 1989-1998 Dodge Ram 2500/3500 Cummins 5.9L 12V
The Industrial Injection Premium Stock Plus Cylinder Head with Fire Ring Grooves is built for 1989-1998 Dodge Ram 5.9L 12 Valve Cummins engines that demand superior durability, reliability, and head gasket sealing. Designed as a direct bolt-on replacement, this cylinder head combines premium valvetrain components with precision-machined fire ring grooves to help withstand higher cylinder pressures in towing, street, and performance applications.
Each cylinder head comes fully assembled and ready for installation, featuring stainless steel nitride-coated valves, high-strength alloy valve guides, upgraded 150lb valve springs, and top hat valve seals. Radius-cut fire ring grooves are machined into the head to work with a compatible fire ring head gasket, helping improve combustion sealing and reduce the risk of head gasket failure under demanding conditions.
The 7mm injector bore design provides compatibility with popular injector upgrades, making this cylinder head an excellent choice for stock replacement, towing applications, and performance builds.
Benefits:
Industrial Injection Features: