CPP 89-98 CUMMINS 5.9L PREMIUM 12V LONG BLOCK

5.9 Cummins Premium Reman Long Block

The CPP Diesel Long Block Crate Engine 1989-1998 Cummins 5.9L 12V is the ultimate choice for those seeking unmatched performance and durability. With exceptional features and precise design, this 12 valve Cummins crate engine offers unparalleled power and resilience, making it the ideal option for enhancing your vehicle's performance. Designed to last even under the toughest conditions, the 5.9 Cummins 12V crate engine provides Xtreme Performance and a remarkable boost that serious vehicle enthusiasts will appreciate.

At CPP Engines, we take pride in delivering high-quality products. Our long block engine cylinders are meticulously bored in a CNC machining center and honed, while main bearing saddles are align honed to OEM specifications. We go the extra mile by ensuring crankshafts are heat treated, shot peened, and machined to CPP Specs on rod & main journals, without any welded crankshaft journals. Our cylinder heads are remanufactured to exceed OEM standards, and every CPP engine is built to our and aftermarket parts manufacturer specifications.

When it comes to shipping and core returns, we offer services to most zip codes in the continental U.S. Engines must be shipped to a business location with a loading dock or forklift, but we can arrange liftgate delivery for residences. Customer satisfaction is our priority, which is why we build engines to order and customize them to your specifications.

Buy with confidence from CPP Diesel, a family-owned business dedicated to providing top-quality diesel parts. With each engine built with precision and quality parts, you can trust that you're getting a reliable and powerful product. Join us in our mission to become the leading diesel parts supplier by choosing the CPP Diesel Long Block Crate Engine for your vehicle upgrade.

Features

• Precision machined for durability and unmatched performance
• All engines have a fresh cylinder bore for long engine life
• Blueprinted spec built engine assembly
• Crack checked and pressure tested
• Valves are sunk deeper for clearance when using high lift camshafts
• Backed by the best warranty in the industry
• Proven quality for 15 years
• Custom made to order

We use only the highest quality parts available from the leading manufacturers in the industry like Mahle, Interstate Mcbee, PAi and Genuine Cummins OEM.

Includes

• New Pistons and Rings
• New Main Bearings
• New Rod Bearings
• Reman Cylinder Head
• Reman Stock Camshaft 
• New Valve Tappets
• Reman Crankshaft
• Reman Connecting Rods
• New Oil Pump
• New machined deck surfaces on both the head and block for a reliable problem free sealing surface
• New Piston Cooling Nozzles

Overview

The Premium Reman Long Block is engineered and built to the highest quality for unmatched durability and reliability. We back our product with the best warranty in the business so rest assured your investment is protected. 

Understanding Available Upgrades

Head Studs

• ARP 2000 are great for the average street trucks up to 80psi boost
• ARP 625 are for over 80-150psi boost
• ARP 14mm studs are for full competition Engines

Connecting Rods

• CPP Hardened Rods for up to 1500hp
• Billet Rods are for over 1500hp

****The biggest failure in the 03-18 Cummins engines is the Connecting rods which are a cracked cap powdered rod. We recommend upgrading your rods to our hardened steel rods and we do not warranty a rod failure if you choose to keep factory rods on any 03-18 Commonrail engine. This is a well known problem with these engines.

O-Rings and Fire Rings

• ORINGS- We recommend using orings on any 89-02 Cummins 5.9L engine over 450hp or 35psi boost. The O-rings must be used with head studs and can not be ran with factory bolts.
• Fire Rings - We recommend fire Rings for competition only. They require too much maintenance for daily street trucks. 

****We do not recommend using any O-ring or Fire Ring on 03-18 Cummins engines under 1300hp or 80psi boost. The factory Multi-layer steel gasket with a good set of 625 head studs is all you need. Don't worry, we have been doing this for 15 years and have thousands of engines running no rings and we have zero issues. 

Valve Springs

• Stock Springs - These are good for those running stock rpm and stock boost but we recommend upgrading with any rpm increase or boost psi over 35psi or we have seen piston to valve contact
• 103 Springs - These are great up to 4500rpm or 75psi boost. We have seen piston to valve contact on engines running larger than stock cams and higher boost numbers.
• 115 Springs - These are great for up to 5500rpm and 120psi boost. 

Port/Polish

• Stock Head - Great for up to 800hp
• Port Exhaust Side - We do the exhaust side porting and intakes valves at the valve for increased flow and high velocity for up to 1300hp
• Port and milled intake - This is for engines wanting over 1300hp and competition use. We will contact you to talk about your setup and what we recommend doing for your custom head. We also offer larger valves and more for extreme competition engines.

****Porting is not the same for every engine. We custom match head flow to your setup and use. Call for details 724-785-4022

Camshaft Upgrades

• Stock cam - Cummins knows cams and these work great but they did leave a little meat on the bone when it comes to Horsepower
• 178/208 - Great cam for off the line pulling power. Really shines down low coming off idle. 
• 188/220 - Great cam for off the line pulling power but slightly higher rpm than the 178. This cam is great from idle to 4500rpm

****We also offer larger cams and custom cuts but the ramp on larger cams is more aggressive and we have found that when street driven, they are much harder on springs and moving parts and we do not recommend them for daily driving. Call to discuss if you require larger cams. We have seen 250-300 degree drops in egts using the 178 or 188 cams and we highly recommend them. 

Girdle Upgrades

• ARP Mains and rods - For those wanting increased reliability or plan to run over 750hp or 60psi boost. 
• Girdle Upgrade - For engines over 800hp, we recommend running a girdle to keep the main caps from walking which causes premature failure. 

****We have other girdles available, just call to order.

Pushrods

• Stock pushrods- These are good for stock trucks and we have noticed them to start deflecting after 45psi boost
• Hamilton and D&J - A must have for engines over 45psi

Shipping 

• We use T-Force freight but we are open to ship however you would like. You can also pick up your engine at CPP. 

Why Choose CPP?

If you are looking for a Premium built engine that is problem free and built using quality parts, this engine is for you. We guarantee a quality build and we have a proven track record to back that up. Our technicians pride themselves on the quality of their builds and we back up our work with the best warranty in the business. Trust in us to get you back on the road with a engine you will tell your friends about.