Products

Tech Specs Plug and Play into your existing Hemi engine harness Wire Ends labeled so you know where to connect (12V+, Ground, Fuel Pump, Starter, etc.) Designed 100% by DIYHEMI,...

Tech Specs Plug and Play into your existing Hemi engine harness Wire Ends labeled so you know where to connect (12V+, Ground, Fuel Pump, Starter, etc.) Designed 100% by DIYHEMI,...

Tech Specs: Plug and Play into your existing Hemi engine harness Wire Ends labeled so you know where to connect (12V+, Ground, Fuel Pump, Starter, etc.) Designed 100% by DIYHEMI, for...

Tech Specs Plug and Play into your existing Hemi engine harness Wire Ends labeled so you know where to connect (12V+, Ground, Fuel Pump, Starter, etc.) Designed 100% by DIYHEMI,...

DIYHEMI offers our QuickCrate HEMI ECMs for 2015-2021 GPEC ECM’s! These are setup to run standalone hemi engines similar to crate ECMs from Mopar. Just plug it in and start...

Looking to ditch AC on your Hemi for race/offroad applications? Look no further! This Gates belt will bypass your stock Car/Jeep AC compressor pulley, allowing for deletion of the AC...

These BBP (Budget Builder Parts) compressor adapters allow you to connect standard #8 and #10 AC fittings to your Hemi Denso 10S17 or similar compressor. Unlike the LS engine fittings,...

This connector will install on your engine harness to the bell crank/TPS and the cable portion of the TPS will attach to your accelerator pedal. If you are running a...

Tired of scraping knuckles or knicking your car's paint on those old rusty valve cover studs on your beautiful new Hemi? Here is your solution, 6061 billet aluminum washers and stainless...

This garage essential is sturdy, sleek, and perfect for wrenching on your hotrod. There is no such thing as too much bean juice, so pick one of these up and...

Note: This is for ECM Calibration only. Harness in photos are for representation only and are not included.  DIYHEMI offers our QuickCrate HEMI ECM services for 2005-2012 NGC ECM’s! These are...

DIYHEMI offers our QuickCrate HEMI ECM calibrations for 2015-2021 GPEC ECM’s! These are setup to run standalone hemi engines similar to crate ECMs from Mopar. Just plug it in and...

Are you looking for a clean and simple way to utilize the factory expansion valve and condenser on your D series vehicle? These fittings were specifically designed to connect with...

This Sublime Technologies exclusive kit is designed to allow use of factory D100, D150, D250 and D350 AC components in conjunction with a modern Gen III Hemi AC compressor. Kit...

*Special Edition we are wearing for MoParty '21. New Piston Badge design on our soft cotton material, you can wear almost anywhere. This one was chosen to stand out but also...

Are you looking for a clean and simple way to utilize the factory expansion valve and on your D series or similarly equipped vehicle? These fittings were specifically designed to connect...

A common issue with some Gen III Hemi swaps is establishing a tidy installation of factory coolant temperature sending units and electric fan controller switches. Our new billet thermostat spacer...

Fan switch designed to activate at 170 or 210 degrees F. 1/8" NPT fitting which fits our Dual Stealth Thermostat spacer.

This Hemi Coil Pack Adapter Harness is for those running 03-05 Hemis with the older coil pack setup (criss-cross spaghetti string) and want to upgrade to the newer 06 and up...

If you know us, you know we do harnesses. Quality Harnesses. These come in 12" and 24" extensions for the Gen III/IV Hemi. These can be used in Modern Mopars and...

Yep, we said it. Show your Hemi pride with our new soft cotton shirts that we'll be wearing at MoParty 2021. We mean it when we say ya'll better 'Hemi Swap...

This pan is used in retrofitting a Gen. III Hemi into a 1963-74 Mopar A-body, B-body, C body or E-body. Ideal for street cruising applications of Mopars using factory style...

This pan is used in retrofitting a Gen. III Hemi into a 1963-74 Mopar A-body, B-body, C body or E-body. Ideal for street cruising applications of Mopars using factory style...

This pan is used in retrofitting a Gen. III Hemi into a 1963-74 Mopar A-body, B-body, C body or E-body. Ideal for street cruising applications of Mopars using factory style...

This pan is used in retrofitting a Gen. III Hemi into a 1963-74 Mopar A-body, B-body, C body or E-body. Ideal for street cruising applications of Mopars using factory style...

This pan is used in retrofitting a Gen. III Hemi into trucks (1972-1993 Dodge D100/D150/W100/W150, 1987-2004 Dodge Dakota, 1974-1993 Ramcharger, 1974-1981 Trailduster and 1973-1987 GM C10 Trucks Ideal for street cruising...

Looking to lower the output pressure of your factory "Toyoda" power steering pump? We have the valve for you! The majority of classic Mopars have a maximum power steering pressure...

This kit offers a convenient upper coolant hose solution for installing a car or Jeep based 5.7/6.4 in a vintage Mopar with LH (Driver's side) upper radiator neck. Simply cut the upper...

This t-shirt is comfortable, soft, lightweight, and form-fitting. It's an ideal staple piece for any wardrobe! • 100% combed ring-spun cotton • Heather Grey is 90% cotton, 10% polyester •...

It's ok to admit it, and it's TOTALLY NORMAL! Besides, what good is a hotrod pickup, if it doesn't scare you a little? • 100% combed ring-spun cotton • Heather...

It's ok to admit it, and it's TOTALLY NORMAL! Besides, what good is a hotrod, if it doesn't scare you a little? • 100% combed ring-spun cotton • Heather Grey...

This 17-ounce, double-walled stainless steel water bottle is perfect for slipping a little something extra into that local car show or just staying hydrated in the summer sun. It will...

These compressor adapters allow you to connect standard #8 and #10 AC fittings to your Hemi Denso 10S17 or similar compressor. Unlike the LS engine fittings, these fittings are specific...

One of the most subtle ways to display your hotrod badge of honor is to attach it to your keys. This metal Keychain features a black body, backfilled in bright...

Temperature sensor for relaying key info back to your older analog gauges. 1/8 inch NPT fitting designed to be used with our Dual Threat Thermostat spacer.

Need a terminating resistor hub to wrap up your harness build? Check out these OE style CANBUS terminating resistor hub kits, complete with hub, 3 connectors and matching pins! Commonly...

Be a part of the Hemi Swap Movement with our super soft cotton T-shirts. Not only will people drool over you because of your style, you won't need to spend...