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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: DJ-VC-0305xx
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..
$575.00
Brand: D&J Precision Machine Part Number: DJ-CH-59S1
Product DescriptionOur 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 val..
$2,900.00
Brand: D&J Precision Machine Part Number: DJ-CH-59S2
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..
$5,380.00
Brand: D&J Precision Machine Part Number: DJ-FC-OEM
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 UPDATED AND DOES NOT..
$425.00
06-22 Dodge 5.9L & 6.7L Cummins D&J Billet Valve Cover
PDP Pick
Brand: D&J Precision Machine Part Number: DJ-VC-0618xx
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..
$575.00
Brand: D&J Precision Machine Part Number: DJ-CH-67S1
2007-2018 6.7 Stage 1 24v Cummins Performance HeadOur 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 Hea..
$2,900.00
Brand: D&J Precision Machine Part Number: PERFORMANCE-6.7
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 availab..
$18,125.00
Brand: D&J Precision Machine Part Number: HPremanextreme-6.7
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 a 20..
$11,550.00
Brand: D&J Precision Machine Part Number: HPreman-6.7
D&J Precision Machine 6.7 Common Rail Cummins HP Reman Long BlockThis 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 with years..
$8,750.00
Brand: D&J Precision Machine Part Number: ST-Perf-6.7
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 1 Hi..
$14,850.00
Brand: D&J Precision Machine Part Number: DJ-CH-67S3
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..
$7,050.00
Brand: D&J Precision Machine Part Number: DJ-BR-CM1
89+ 5.9L & 6.7L Cummins D&J X-Beam 1.000" Longer Billet Connecting RodsProven 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 rods are made from extreme high ..
$3,750.00
Brand: D&J Precision Machine Part Number: DJ-BR-CMSTD
89+ 5.9L & 6.7L Cummins D&J X-Beam Stock Length Billet Connecting RodsProven 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 impact tool steel. This materia..
$3,395.00
Brand: D&J Precision Machine Part Number: DJ-CH-12HP
D&J 89-98 12v Cummins Performance Head STAGE 1Our 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 Performance Cummins Reman Head..
$1,075.00
Brand: D&J Precision Machine Part Number: DJ-CH-9802S1
1998 – 2002 ISB Stage 1 24v Cummins Performance HeadOur 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 Performance Cummins..
$2,900.00
Brand: D&J Precision Machine Part Number: PPUMP-STAGE2-PERFORMANCE-HEAD
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 ..
$5,380.00
Brand: D&J Precision Machine Part Number: VP44-STAGE2-CUMMINS-HEAD
Product DescriptionOur 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 he..
$5,380.00
Brand: D&J Precision Machine Part Number: PERFORMANCE-5.9
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 applicat..
$18,125.00
Brand: D&J Precision Machine Part Number: HPremanextreme-5.9
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 camshaft..
$11,550.00
Brand: D&J Precision Machine Part Number: HPreman-5.9
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 Industry..
$8,750.00
Brand: D&J Precision Machine Part Number: St-Perf-5.9
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 Perform..
$14,850.00
Brand: D&J Precision Machine Part Number: DJ-CH-xxxxxx
Billet Stage 2 Intake ManifoldsThe 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 mounting ..
$1,020.00
Brand: D&J Precision Machine Part Number: DJ-CH-24FTPR
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 Number: DJ-CH-24FTPR..
$313.20
Brand: D&J Precision Machine Part Number: DJ-CH-24HDSP
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 ..
$380.00
Brand: D&J Precision Machine Part Number: DJ-CH-12FTPR
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 Number: DJ-CH-12FTPR..
$313.20
Brand: D&J Precision Machine Part Number: DJ-AK-5.5VS
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: Billet a..
$790.00
Brand: D&J Precision Machine Part Number: DJ-CH-24TR
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 Stage 4 ..
$368.00
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..
$565.00
Brand: D&J Precision Machine Part Number: DJ-AK-5.5
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-band clamps     Pa..
$565.00
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: ..
$790.00
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