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D&J Precision Machine Long Blocks, Cylinder Heads, & Valve Covers

Shop D&J Precision Machine parts at Pure Diesel Power. We have premium-grade D&J Precision Machine parts including cylinder heads, long blocks, & crate engines. Explore our D&J Precision Machine components to upgrade your truck’s style and performance, then browse our lighting, horns, towing hitches, and other products.

Brand: D&J Precision Machine Part Number: DJPCNC1000xx
We designed our Billet Valve Cover 03-05 in house for the best balance of fit, finish, and functionality, while keeping your budget in mind.   These valve covers are made from aircraft quality 6061-T6 aluminum and come with all stainless steel fasteners.   A baffle system was inc..
$579.99
Brand: D&J Precision Machine Part Number: DJPCH100026
Product Description Our Stage 1 24v Cummins Performance Head is a step up in performance without the extra expense and work involved with an aftermarket intake.  Our Stage 1 Cummins Performance Head includes everything in our Performance Cummins Reman Head along with 115 pound..
$2,999.99
Brand: D&J Precision Machine Part Number: DJPCH100031
Our Stage 2 Cummins Performance Head is designed for the performance enthusiast.  Includes everything in our Stage 1 Cummins Performance Head and a D&J Stage 2 Billet Intake Manifold, thread in soft plugs in the head, titanium valve spring retainers, and heavy-duty extra-large val..
$5,399.99
Brand: D&J Precision Machine Part Number: DJPCNC100167
Our Cummins Billet Timing cover is machined in-house from 6061 aluminum. It is designed to use factory fan with stock dampener and belt without modification. Our Cummins billet timing cover kits come standard with stainless steel hardware.   *****PLEASE NOTE THE CRANK SEAL HAS BEEN UPDATE..
$439.99
06-22 Dodge 5.9L & 6.7L Cummins D&J Billet Valve Cover
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Brand: D&J Precision Machine Part Number: DJPCNC1000XX
We designed the Billet Valve Cover in-house for the best balance of fit, finish, and functionality, while keeping your budget in mind.   These valve covers are made from aircraft quality 6061-T6 aluminum,  and come with all stainless steel fasteners.   A baffle system was in..
$579.99
Brand: D&J Precision Machine Part Number: DJPCH100046
2007-2018 6.7 Stage 1 24v Cummins Performance Head Our Stage 1 24v Cummins Performance Head is a step up in performance without the extra expense and work involved with an aftermarket intake.  Our Stage 1 Cummins Performance Head includes everything in our Performance Cummins Reman..
$2,999.99
Brand: D&J Precision Machine Part Number: DJPLB100042
D&J Precision Machine Performance 6.7 Cummins Long Block. Our Performance 6.7 Cummins come fully assembled from oil pan to rockers with our X-Beam Stock Length Billet Rods and our Stage 2 High Performance Cylinder Head. We custom build this engine for your application, with the best parts ava..
$18,999.99
Brand: D&J Precision Machine Part Number: DJPLB100019
HP Reman Extreme 6.7 Cummins Long Block. Our HP Reman Extreme 6.7 Cummins come fully assembled including oil pan rear crank seal front cover and crank seal, and oil filter housing.  with our Stage 1 High Performance Cylinder Head. We include a street/towing camshaft. Customers typically see ..
$12,124.99
Brand: D&J Precision Machine Part Number: DJPLB100018
D&J Precision Machine 6.7 Common Rail Cummins HP Reman Long Block This engine platform is for STOCK HP Level Applications only! Our 6.7 Common rail Cummins HP Reman Long Blocks come fully assembled including oil pan and front timing cover, using the best products we have found wi..
$9,174.99
Brand: D&J Precision Machine Part Number: DJPLB100020
D&J Precision Machine Street Performance 6.7 Cummins Long Block. Our Performance Street 6.7 Cummins come fully assembled including oil pan rear crank seal front cover and crank seal, and oil filter housing.  with our X-Beam Stock Length Billet Rods and our Stage ..
$15,499.99
Brand: D&J Precision Machine Part Number: DJPCH100056
Our Stage 3 Cummins Performance Head is designed for the extreme high performance.  Includes everything in our Stage 2 Cummins Performance Head, with a D&J Stage 3 Billet Intake Manifold, oversize super alloy intake and exhaust valves, thread in soft plugs in the head, titani..
$7,099.99
Brand: D&J Precision Machine Part Number: DJPCNC100235
89+ 5.9L & 6.7L Cummins D&J X-Beam Stock Length Billet Connecting Rods   Proven over 3000hp and 4000tq, we design our X-BEAM Billet Cummins Rods with our unique “X” profile to maximize the strength while reducing weight. Our billet rods are made from extreme high impac..
$3,399.99
Brand: D&J Precision Machine Part Number: DJPCNC100225
89+ 5.9L & 6.7L Cummins D&J X-Beam 1.000" Longer Billet Connecting Rods   Proven over 3000hp and 4000tq, we design  our X-BEAM Billet Cummins Rods with our unique “X” profile. This maximizes the strength while reducing weight as much as possible. Our billet r..
$3,749.99
Brand: D&J Precision Machine Part Number: DJPCH100067
1998 – 2002 ISB Stage 1 24v Cummins Performance Head Our ISB Stage 1 24v Cummins Performance Head is a step up in performance without the extra expense and work involved with an aftermarket intake.  Our ISB Stage 1 Cummins Performance Head includes everything in our Performan..
$2,900.00
Brand: D&J Precision Machine Part Number: DJPCH100095
Our Stage 2 Cummins Performance Head is designed for the performance enthusiast.  Includes everything in our Stage 1 Cummins Performance Head and a D&J Stage 2 Billet Intake Manifold, thread in soft plugs in the head, titanium valve spring retainers, and heavy duty ..
$5,399.99
Brand: D&J Precision Machine Part Number: DJPCH100095
Product Description Our Stage 2 Cummins Performance Head is designed for the performance enthusiast.  Includes everything in our Stage 1 Cummins Performance Head and a D&J Stage 2 Billet Intake Manifold, thread in soft plugs in the head, titanium valve spring retainers, an..
$5,399.99
Brand: D&J Precision Machine Part Number: DJPLB100017
D&J Precision Machine Performance series 5.9 Cummins Long Block. Our Performance 5.9 Cummins come fully assembled from oil pan to rockers with our X-Beam Stock Length Billet Rods and our Stage 2 High Performance Cylinder Head. We custom build this engine for your appl..
$18,999.99
Brand: D&J Precision Machine Part Number: DJPLB100015
D&J Precision Machine HP Reman Extreme 5.9 Cummins Long Block. Our HP Reman Extreme 5.9 Cummins come fully assembled including oil pan rear crank seal front cover and crank seal, and oil filter housing.  withour Stage 1 High Performance Cylinder Head. We include a street/towing cams..
$12,124.99
Brand: D&J Precision Machine Part Number: DJPLB100014
D&J Precision Machine 5.9 Common  Rail Cummins HP Reman Long Block. Our 5.9 Common rail Cummins HP Reman Long Blocks come fully assembled including oil pan and front timing cover, using the best products we have found with years of experience in the high performance diesel Indu..
$9,174.99
Brand: D&J Precision Machine Part Number: DJPLB100012
D&J Precision Machine Street Performance 5.9 Cummins Long Block. Our Performance Street 5.9 Cummins come fully assembled including oil pan rear crank seal front cover and crank seal, and oil filter housing.  with our X-Beam Stock Length Billet Rods and our Stage 1 High Per..
$15,499.99
Brand: D&J Precision Machine Part Number: DJ-CH-xxxxxx
Billet Stage 2 Intake Manifolds The Billet Stage 2 Intake Manifold is designed for our Stage 2 cylinder heads. They are sold with either 5.9 intake and fuel or 6.7 intake and fuel setups. These intakes utilize the stock intake horn locations and fuel setups.  It comes with all the mou..
$5,399.99
Brand: D&J Precision Machine Part Number: DJP100001KIT
Our 7/16″ .168 wall push rods for 24V engines have the advantage of  strength and rigidity. They have been proven to 3000+ HP and are still good for your daily driven truck.   Specs of Push Rods: 7/16” diameter .168 wall, factory length     Part N..
$314.99
Brand: D&J Precision Machine Part Number: DJPDHSP115KIT
Our HD 115lb 24v Cummins Valve Springs have been proven with years of testing. We have seen over 120psi of boost on one of our Stage 3 cylinder heads with these springs. These are the same valve springs we included standard on our Stage 1, Stage 2, Stage 3 and Stage 4 performance cylinder heads and ..
$389.99
Brand: D&J Precision Machine Part Number: DJP100002KIT
Our 7/16″ .168 wall push rods for 12V engines have the advantage of  strength and rigidity. They have been proven to 3000+ HP and are still good for your daily driven truck.   Specs of Push Rods: 7/16” diameter .168 wall, factory length     Part N..
$314.99
Brand: D&J Precision Machine Part Number: DJPCNC100297
Billet Air Shut Off Guillotine with Velocity Stack for sled pulling applications. Dual internal spring design utilizing a 1/4 inch thick aluminum blade. It includes set screw or weld-on flange and genuine Cummins v-bands.   THE BILLET AIR SHUT OFF GUILLOTINE WITH VELOCITY STACK INCLUDES: ..
$799.00
Brand: D&J Precision Machine Part Number: DJPCNC100216
D&J Precision Machine Cummins Titanium Retainers for 1998 and up 24v Cummins cylinder heads. Our valve spring titanium retainers are proudly made in-house and they are 10 grams lighter than the stock retainers. Our Cummins Titanium Retainers are included standard on D&J Stage 2, Stage 3 and ..
$369.99
Brand: D&J Precision Machine Part Number: DJPCNC100273
Billet Air Shut Off Guillotine for sled pulling applications. Dual internal spring design utilizing a 1/4in thick aluminum blade. Includes set screw or weld-on flange and genuine Cummins v-band.   Included:   Billet air shutoff Custom turbo cover adapter Genuine Cummins v..
$574.99
Brand: D&J Precision Machine Part Number: DJPCNC100274
Billet Air Shut Off Guillotine for sled pulling applications. Dual internal spring design utilizing a 1/4in thick aluminum blade. Includes set screw or weld-on flange and genuine Cummins v-band.   Included:   Billet air shutoff Custom turbo cover adapter Genuine Cummins v..
$574.99
Brand: D&J Precision Machine Part Number: DJPCNC100267
Billet Air Shut Off Guillotine with Velocity Stack for sled pulling applications. Dual internal spring design utilizing a 1/4 inch thick aluminum blade. It includes set screw or weld-on flange and genuine Cummins v-bands.   THE BILLET AIR SHUT OFF GUILLOTINE WITH VELOCITY STACK INCLUDES: ..
$799.00
Brand: D&J Precision Machine Part Number: DJ-CH-12HP
Discontinued: (5/10/2024) D&J 89-98 12v Cummins Performance Head STAGE 1 Our Stage 1 12v Cummins Performance Head is a step up in performance without the extra expense and work involved with an aftermarket intake. Our Stage 1 Cummins Performance Head includes everything in our&nb..
$0.00
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