10PCS Cylinder Head Bolt 3920780 Fits for Cummins Engine 4B 6B 6B5.9 6BTA5.9-G3 4B3.9 B5.9-C177

Cylinder Head Bolt 3920780 – Premium Replacement for Cummins Engines and Compatible Equipment

High-performance aftermarket cylinder head bolts engineered for reliable engine assembly integrity in Cummins B-series diesel engines and a wide range of CASE, New Holland, and Dodge applications. Precision-manufactured for drop-in compatibility and consistent clamping performance in demanding agricultural, construction, and on-highway environments.

Technical Specifications

Fits Part Numbers: M3920780, SCR9341, 3901220, 3903939, 3918472, 3920780, J920780, J903939
Condition: New, aftermarket replacement
Function: Cylinder head bolt for engine head gasket sealing and structural integrity

Verified Equipment Compatibility

Fits Cummins Engines:

• 4B, 4B3.9, 3.9L
• 6B, 6B5.9, 5.9L, 6.7L
• 6BTA5.9-G3, B5.9-C177, ISB

Fits Dodge Pickup Trucks:

• 2500, 3500

Fits CASE Tractor Loaders (selected models):

• 550, 580E, 580K, 580SE, 621, 650, 650G, 650H, 650K, 680L, 688
• 750H, 750K, 780C, 780D, 850D, 850E, 850G, 850H, 850K, 855D, 855E, 880D
• 888, 1085B, 1085C, 1086B, 1088, 1150E, 1150G, 1150H, 1155E
• 1620, 1640, 1644, 1800, 1822, 1840, 1844, 1845C, 1896
• 2022, 2044, 2096, 2144, 2344, 3150, 3185, 3210
• 4390, 4390T, 4391, 4391T, 4391TA, 5120, 5130, 5140, 5150
• 5220, 5230, 5240, 5250, 6000, 6500, 6590, 6590T, 6590TA, 6591T, 6591TA
• 8820, 8825, 8825HP, 8830, 8840, 8850, 8860, 8860HP, 8870, 8880, 8880HP
• 40XT, 60XT, 70XT, 75XT, 85XT, 90XT, 95XT
• 450C, 455C, 480E, 480E LL, 550E, 550G
• MX100, MX110, MX120, MX135, MX150, MX170
• RP65, RP85, RP110, RP135, RP165, RPZ65, RPZ85, RPZ125, RPZ145
• SPX3150, SPX3185, SPX3200, SPX3200B, SPX3310
• W11B, W14B, W14C

Fits New Holland Tractor Loaders:

• U80, LV80

Why Choose This Cylinder Head Bolt Set

The cylinder head bolts are critical fasteners in your engine assembly, clamping the head gasket between the cylinder head and engine block to maintain combustion pressure and coolant sealing. Worn, stretched, or damaged head bolts can lead to head gasket failure and costly engine damage. This replacement set delivers:

• Reliable clamping force – Correct torque specifications for proper head gasket sealing and combustion integrity
• Exact-fit installation – Direct replacement with correct thread pitch, length, and grade specifications for Cummins B-series engines
• Durable construction – Built to withstand continuous thermal cycling and high combustion pressures in heavy-duty diesel engine environments
• Cost-effective solution – Premium aftermarket quality at a fraction of dealer pricing

Package Contents

10 × Cylinder Head Bolt (3920780)

Essential for engine rebuild, head gasket replacement, and major engine service. Keep your Cummins 4B, 6B, and ISB engines properly assembled and sealed for reliable performance across every application.