Norcal Diesel Performance parts and accessories are engineered for diesel owners who demand more than off‑the‑shelf solutions, combining real‑world testing with OE‑plus fitment you can trust. The Norcal Diesel Performance brand stands out because every component is designed, tested, and validated in‑house by technicians who work on Powerstroke, Duramax, and Cummins engines every day. Nothing is sold unless it meets strict standards for performance and long‑term reliability. The product scope covers critical systems such as fuel injection upgrades, engine wiring harnesses, head gaskets, ARP stud kits, sensors and electrical pigtails, valve cover gaskets, exhaust components, battery cable kits, diesel accessories, and ProDuty OEM+ engine and transmission mount kits. Unlike competitors that rely solely on generic sourcing, Norcal Diesel Performance backs its parts with hands‑on experience, vehicle‑specific engineering, and direct expert support, giving customers confidence that each part is built to solve common diesel failure points and perform under real driving and towing conditions.
1996–1997 Ford 7.3L Powerstroke Engine Wiring Harness F7TZ‑9A451‑CANew
Direct‑fit replacement engine wiring harness for 1996–1997 Ford F‑250/F‑350 7.3L Powerstroke (OE F7TZ‑9A451‑CA). Plug‑and‑play solution for no‑start, stalling, and wiring‑relat...
1999.5-2001 Ford 7.3L Powerstroke Engine Harness F81Z‑12B637‑EA (Federal Emissions Only)New
Direct‑fit engine wiring harness F81Z‑12B637‑EA for 1999.5-2001 Ford F‑250/F‑350/F‑450 7.3L Powerstroke with federal emissions and 4R100 Automatic Transmission.
Includes glow plug r...
2000–2001 Ford F-250, F350, F-450, F-550 and Excursion 7.3L Engine Harness YC3Z‑12B637‑BA (CA Emissions)New
Direct‑fit engine wiring harness YC3Z‑12B637‑BA for 2000–2001 Ford Excursion 7.3L Powerstroke with California emissions and automatic transmission. Designed for engines built after 10/25/1...
2002–2003 Ford 7.3L Powerstroke Engine Harness F81Z‑12B637‑FA (Federal Emissions Only)New
Direct‑fit engine wiring harness F81Z‑12B637‑FA for 2002–2003 Ford F‑250/F‑350/F‑450 7.3L Powerstroke with federal emissions and 4R100 Automatic Transmission.
Includes glow plug r...
Fits 2003 - 2006 Ford 6.0L Powerstroke (Check our Fitment Chart below for verification!)
Application Notes:
For 18mm Alignment Dowels: Manufactured from 2003 to January 11, 2006. SKU: FD-...
2003–2004 Ford 6.0L Powerstroke Engine Harness 3C3Z‑12B637‑BANew
Direct‑fit engine wiring harness 3C3Z‑12B637‑BA for 2003–2004 Ford F‑250, F‑350, F‑450, and F‑550 trucks with 6.0L Powerstroke diesel. Designed for trucks built on or after 01/30/2...
2004 Ford 6.0L Powerstroke Engine Harness 4C3Z‑12B637‑AANew
Direct‑fit engine wiring harness 4C3Z‑12B637‑AA for 2004 Ford F‑250, F‑350, F‑450, and F‑550 6.0L Powerstroke trucks. Designed for engines built on or after 09/29/2003 and equipped w...
2004-2005 Ford 6.0L Powerstroke Engine Harness - 4C3Z-12B637-CA - Excursion, No Fuel HeaterNew
OEM‑replacement main engine wiring harness for 2004–2005 6.0L Powerstroke Excursion applications that were built without a fuel heater. Designed from the factory 4C3Z‑12B637‑CA pattern, th...
2004.5-2007 LLY/LBZ 6.6L Duramax Grade C Head Gasket Kit with ARP StudsNew
Premium Head Gasket & ARP 2000 Stud Kit for 2004.5-2007 Chevy/GMC 6.6L Duramax LLY/LBZ.
Includes Grade C Multi-Layer Steel Head Gaskets and ARP 2000 Series Head Studs for a complete top-end sol...
2004.5-2007 LLY/LBZ 6.6L Duramax Grade C Head Gasket Kit with Custom Age 625+ w/ ARP StudsNew
Premium Head Gasket & ARP Custom Age 625+ Stud Kit for 2004.5-2007 Chevy/GMC 6.6L Duramax LLY/LBZ.
Includes Grade C Multi-Layer Steel Head Gaskets and ARP 625+ Series Head Studs for a complete ...
2005 Ford 6.0L Powerstroke Engine Harness 5C3Z‑12B637‑AANew
OE‑style main engine wiring harness for 2005–2007 6.0L Powerstroke (5C3Z‑12B637‑BA), with an optional matching FICM harness 5C3Z‑9D930‑A to refresh the critical high‑failure circ...
2005–2007 Ford 6.0L Powerstroke Engine Harness 5C3Z‑12B637‑BANew
OE‑style main engine wiring harness for 2005–2007 6.0L Powerstroke (5C3Z‑12B637‑BA), with an optional matching FICM harness 5C3Z‑9D930‑A to refresh the critical high‑failure circ...
Fits 2006 - 2010 Ford 6.0L Powerstroke (Check our Fitment Chart below for verification!)
Application Notes:
For 18mm Alignment Dowels: Manufactured from 2003 to January 11, 2006. SKU: FD...
6.0L EBP Exhaust Back Pressure Sensor and Connector For 05.5-07 Ford Powerstroke DieselNew
The Ford 6.0L Powerstroke EBP (Exhaust Back Pressure) sensor monitors exhaust system pressure to optimize turbocharger performance and emissions control. This direct-fit replacement sensor is desi...
6.0L EGR Cooler Gasket Set with Blue Hose For 03-10 Ford Powerstroke DieselNew
The 6.0L EGR Cooler Gasket Set with Blue Hose is a complete gasket and O-ring kit designed for 2003-2010 Ford 6.0L Powerstroke diesel engines. This kit includes all necessary seals, gaskets, and a...
6.4L EBP Exhaust Back Pressure Sensor and Connector For 08-10 Ford Powerstroke DieselNew
The Ford 6.4L Powerstroke EBP (Exhaust Back Pressure) sensor monitors exhaust system pressure for optimal diesel particulate filter (DPF) and turbo operation. This OEM-quality replacement sensor f...
Bolt‑on 201SS bellowed up‑pipes with gaskets and hardware for 1999.5–2003 7.3L Powerstroke, replacing the factory crush‑doughnut style pipes that commonly crack and leak. Improves sealing,...
Fits 2006 - 2009 Dodge Ram 2500/3500 5.9L/6.7L Cummins
Some 2006-2009 trucks require a 90-degree eyelet on the starter cable.
Please verify fitment. If you have a Straight eyelet, Please cl...
Fits 2006 - 2009 Dodge Ram 2500/3500 5.9L/6.7L Cummins
Some 2006-2009 trucks require a 90-degree eyelet on the starter cable.
Please verify fitment. If you have a 90-degree eyelet, Please c...
Exhaust Backpressure Sensor Tube and Connector Kit for 94-97 Ford 7.3LNew
7.3L Ford Exhaust Backpressure Sensor, Fitting, Tube and Connector Kit
Fits 1994-1997 Ford F-250, F-350, F-450, F-550 with 7.3L Diesel DI Direct Injected
Exhaust Manifold Bolt and Spacer Kit with Manifold Gaskets for 1998.5-2018 Dodge with 5.9L/6.7L CumminsNew
High-strength exhaust manifold bolt and spacer kit with manifold gaskets for 1998.5-2018 Dodge Ram with 5.9L/6.7L Cummins engines. Features Grade 10.9 chromoly steel bolts with black oxide finish ...
