Cummins Cylinder Head Diesel Engine Block QSB QSB6.7 4955412

Benefits

1. Heavy‑duty high‑strength cast‑iron casting, excellent rigidity to cooperate reliably with engine cylinder head under continuous heavy‑load cycles

2. Precision‑finished cylinder bores and threaded mounting holes, guarantee perfect fitment with engine cylinder head gasket and engine cylinder head

3. Complete integrated oil galleries and water‑jacket passages, delivering stable lubrication and heat dissipation for engine cylinder head and full power assembly

4. Anti‑deformation casting treatment, minimizing warping risk that would cause poor sealing between cylinder block and engine cylinder head

5. Strict dimension compliance with OEM specifications, direct drop‑in replacement, no reworking required to fit original engine cylinder head

6. Great interchangeability, works flawlessly with genuine or high‑quality aftermarket engine cylinder head for QSB QSB6.7 engine repair jobs

 

Main Components

This 4955412 Cummins cylinder block assembly includes main cast iron block body, cylinder bores, crankshaft main bearing housing, internal lubrication oil galleries, cooling water jacket, mounting threaded holes and accessory connection bosses.

1. Cylinder Block Main Cast Body: The backbone of QSB6.7 engine, forms complete combustion space together with engine cylinder head, bears all combustion and mechanical impact force.

2. Precision Cylinder Bores: Accommodate piston and piston ring assemblies, cooperate with engine cylinder head to maintain correct engine compression ratio.

3. Internal Lubrication Galleries: Route engine oil to crankshaft bearings and upward toward engine cylinder head for valve train lubrication.

4. Integrated Water Jacket Channel: Circulate coolant flow, transfer excessive heat away from block and the matched engine cylinder head to prevent engine overheating.

5. Standard Mounting Bosses & Thread Holes: Provide accurate positioning for crankcase, oil pan, fuel accessories and bolt‑on installation of engine cylinder head.

 

Advantage

1. Manufactured following original OEM drawing standards, tight tolerance ensures flat mating surface for solid connection with engine cylinder head.

2. Professional stress‑relief aging processing for casting, greatly lowers the risk of body distortion that triggers leakage between block and engine cylinder head.

3. Effectively resolves common engine failure scenarios: cylinder bore scuffing, block cracking, thread stripping, compression loss caused by defective original block, restoring normal working status with matching engine cylinder head.

4. Preserves original engine compression performance after overhaul, avoids power drop, excessive oil consumption and abnormal overheating when paired with qualified engine cylinder head.

5. Broad application compatibility: fits construction excavators, wheel loaders, farm tractors and generator units driven by Cummins QSB / QSB6.7 diesel engine.

6. Cost‑effective aftermarket spare‑part solution, suitable for machinery repair workshops, engine rebuild factories and global parts wholesalers, supports bulk order demand together with supporting engine cylinder head and overhaul gasket kits.

 

Application
 

1. Full engine overhaul and rebuild for Cummins QSB, QSB6.7 diesel engines

2. Construction machinery including excavators, wheel loaders and compactors equipped with QSB6.7 power

3. Large‑size agricultural machinery, farm tractors and harvesters with Cummins QSB series engine

4. Industrial stationary generator sets and pumping equipment powered by QSB QSB6.7

5. Replacement for cracked, worn or damaged original cylinder block, working cooperatively with compatible engine cylinder head

 

Use Cases
 

This Cummins Cylinder Block 4955412 is built for stable mechanical performance, precise dimensional accuracy and long service lifespan. Working in coordination with a properly selected engine cylinder head, it maintains ideal compression condition, reliable lubrication and cooling circulation for Cummins QSB and QSB6.7 diesel power systems. Whether you are handling on‑site engine overhaul work or sourcing aftermarket spare parts for wholesale business, this robust cylinder block delivers dependable, cost‑effective quality assurance. Pick our high‑performance 4955412 cylinder block, pair it up with a suitable engine cylinder head, to bring back optimum operating performance for your Cummins QSB QSB6.7 engine!