A-3920779-AI Bolt, Head; 12MM X 1.75MM X 70MM

One New Aftermarket Replacement Cylinder Head Bolt for Cummins B-Series Engines

This M12 x 1.75 x 70mm hex flange head cap screw is the short cylinder head bolt used on Cummins 4B, 4BT, 4BTA, 6B, 6BT, and 6BTA diesel engines. It secures the cylinder head to the engine block and is a critical fastener for maintaining proper head gasket clamping force and sealing. On a standard Cummins 6-cylinder 12-valve head, six short bolts of this size are used alongside medium (3920780) and long (3920781) bolts for a full set of 26. This bolt also fits a wide range of Fits Case, Fits Case IH, and other agricultural and construction equipment powered by Cummins 4B/6B platform engines.

Specifications

• Thread Size: M12 x 1.75
• Length: 70mm
• Head Style: Hex flange
• Application: Cylinder head (short bolt position)
• Qty per 12V 6-cylinder engine: 6 (short position)

Compatible Models

Cummins Engines: B3.9L (4B, 4BT, 4BTA, 4BTAA), B5.9L (6B, 6BT, 6BTA, 6BTAA) 12-valve

Dodge / Ram: Ram 2500, Ram 3500 with 5.9L 12-valve Cummins (1989-1998)

Fits Case IH Tractors: 1896, 2096, 5120, 5130, 5140, 5220, 5230, 5240, 5250, MX100, MX110, MX120, MX135

Fits Case Industrial / Construction: 450C, 455C, 480E, 480F, 550, 550E, 550G, 580E, 580K, 580L, 584E, 585E, 585G, 586E, 588G, 590, 621, 621B, 650, 650E, 650G, 660, 680K, 680L, 686G, 760, 780C, 780D, 850D, 850E, 850G, 855D, 855E, 860, 880D, 888, 1085B, 1150E, 1150G, 1155E, 1840, 1845C, 9010, 9010B, 9020, 9020B, 9030, 9030B, W11B, W14B, W14C, W602BD, W602BDA, W602BPD, W752B, W1102, W1102D

Fits Allis-Chalmers: 8745, 8765, 8775, 8785, LT70, LT85, RT95, RT115, RT130, RT145

White: 60 American, 80 American, 100 American, 120 American, 125 Workhorse, 6124, 6125 Workhorse

Replaces Part Number(s):

3920779, A-3920779-AI, J920779, J903938, 3903938, 3918472

Aftermarket Interchange Numbers

324684A1, 330340R1, 331175, 503228, 503454, 513-2616, 513-616, 614-8075, 814-8075, 813-8075, 907210, MLR907210, P1232960, Z1232960, 80503228, 80331175, 119582, 44368, G433832, P433832, E600220S72, SBA010100875, SBA011510875, K650653, 30521R1, 4892861, 02/911043

New aftermarket replacement part - not remanufactured, not used.