The cylinder block is the engine’s structural foundation. It must be strong and precise. For Cummins ISBE3.9 and QSB4.5 diesel engines, the 4897316 cylinder block AS is a key component. It supports the crankshaft, pistons, and camshaft. It also ensures proper cooling and lubrication. Therefore, a high-quality block is essential for any major overhaul. This OEM-grade cylinder block restores original engine performance. It also provides long-term durability.
Engineered for Cummins ISBE3.9 and QSB4.5 Platforms
The Cummins ISBE3.9 is a 3.9L electronically controlled diesel engine. It uses common rail fuel injection. It also has a turbocharger and intercooler. Consequently, it delivers power from 140 to 180 horsepower. Maximum torque reaches 625 N·m. The QSB4.5 is an upgraded version. It has a 4.5L displacement. Its bore is 107mm, and its stroke is 124mm. Therefore, it produces up to 173 horsepower. Peak torque is 705 N·m.
Both engines feature a parent bore design. This means the cylinders are machined directly into the block. There are no replaceable liners. As a result, the block is more rigid. Engine noise is lower. Cylinder durability is significantly improved. The 4897316 cylinder block AS fits all ISBE3.9 and QSB4.5 variants. This includes Tier 3, Tier 4 Interim, and Tier 4 Final models.
Applications of the 4897316 Cylinder Block AS
This cylinder block is used in many types of equipment. For example, it powers construction machinery. It also fits commercial trucks, agricultural tractors, and marine engines. Below are common applications.
Construction Machinery & Excavators:
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Komatsu PC160LC-8 (with QSB4.5)
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Hitachi ZX130, ZX140W (with ISBE3.9)
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Kobelco SK130, SK140
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JCB JS130, JS145 excavators
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JCB 3CX, 4CX backhoe loaders
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Caterpillar 311D, 312D
On-Highway Trucks & Buses:
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Dongfeng Cummins ISBe 140, 160, 180
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Iveco F4AE0481, F4AE3481
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Foton Auman medium trucks
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Hino utility trucks
Agriculture Machinery:
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Case IH JX70, JX80, JX90 tractors
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New Holland TD70, TD80, TD90
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Claas Jaguar forage harvesters
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Massey Ferguson 5400 series
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John Deere 5000 series (5E, 5M)
Marine Engines:
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ISBe 3.9L marine engines
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Used in workboats, fishing vessels, and small yachts
Why Choose This 4897316 Cylinder Block AS?
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High-strength cast iron construction. It resists cracking under high cylinder pressure. It also dampens vibration effectively. Therefore, engine noise is reduced.
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Parent bore design. This provides superior rigidity. It also eliminates liner-related failures. Consequently, the engine lasts longer.
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Compatible with high-pressure common rail systems. The QSB4.5 generates injection pressure up to 1600 bar. Therefore, the block has reinforced oil passages. It also has better sealing surfaces.
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Enhanced lubrication and cooling. Both engines use directed piston cooling. Oil nozzles spray oil to the underside of each piston. This reduces piston temperature. As a result, piston life is extended.
Signs Your Engine Needs a New Cylinder Block
In some cases, the block cannot be repaired. You must replace it. Watch for these signs:
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Cracked block. This may be caused by overheating or freezing. Coolant may appear in the engine oil. External leaks may also occur.
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Severe cylinder bore wear. Scoring or excessive wear cannot be fixed by honing. Then you will notice loss of compression. You may also see blue smoke (blow-by).
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Warped deck surface. This causes repeated head gasket failures. Oil and coolant may mix.
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Damaged threads. Stripped threads in main bolt holes or head stud holes prevent proper tightening. Consequently, seals fail.
Installation Recommendations
Follow these steps for a successful replacement. First, clean the engine bay thoroughly. Second, check the cylinder head for flatness. If it is warped, resurface it.
Always use new cylinder head bolts. Torque them to Cummins specifications. This usually requires multiple stages plus an angle turn. In addition, use new gaskets and O-rings. Never reuse old seals.
Coat all bearing surfaces with assembly lube. This protects the crankshaft, pistons, and camshaft during initial startup. Then, torque the timing cover, oil pan, and front/rear covers in the correct sequence.
After installation, flush the cooling system. Fill it with the correct coolant grade. Bleed air from the system. Finally, start the engine at low idle. Check for oil and coolant leaks. Perform a test run under light load. Verify that all systems function normally.
Conclusion
The 4897316 cylinder block AS for Cummins ISBE3.9 and QSB4.5 engines is a reliable foundation for any engine rebuild. It fits many applications: trucks, excavators, tractors, and marine vessels. Moreover, it meets OEM specifications for strength, precision, and durability. Therefore, choosing this cylinder block ensures your engine performs like new.
Order your 4897316 cylinder block AS today. Restore your Cummins engine to peak condition.
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