Cummins 4B 3.9L Inframe Overhaul Rebuild Kit, FP Diesel, Piston 3906223

Naturally AspiratedNon-Emissions Engine239 Cubic InchBore: 4.02 in / 102 mmStroke: 4.72 in / 119 mm
Piston Marked: 6208, 6209, 6223
CPL Numbers: 591, 681, 721, 725, 791, 843, 895, 981, 1172, 1259, 1312, 1522, 1932
Case-IH: 6000 Windrower, 6500 Windrower, 8820, Windrower, 8830 WindrowerCase: 450C Crawler, 455C Crawler, 480E Backhoe, 480E LL Backhoe, 480F Backhoe, 480F LL Backhoe, 550 Crawler, 550E Crawler, 580K Backhoe, 580SE Backhoe, 580SK Backhoe, 584E Forklift, 585E Forklift, 586E Forklift, 660 Trencher, 760 Trencher, 1840 Skid Steer Loader, 1845C Early Skid Steer Loader
Inframe Kit Includes (4) Piston w/Retainer & Rings, Standard FP-3802060 Piston FP-3906223, C.R. 17.3:1 (4) Piston Pin FP-3934048  (1) Main Bearing Set, Standard FP-4955855 180 Degree Thrust (8) Rod Bearing Half Upper/Lower, Standard FP-3939859  (1) In-Frame Gasket Set FP-3804896S 1991-4/2003, Std Head Gasket 
Overhaul Kit Includes (4) Piston w/Retainer & Rings, Standard FP-3802060 Piston FP-3906223, C.R. 17.3:1 (4) Piston Pin FP-3934048  (1) Main Bearing Set, Standard FP-4955855 180 Degree Thrust (8) Rod Bearing Half Upper/Lower, Standard FP-3939859  (1) Head Gasket Set FP-3804896 1991-4/2003, Std Head Gasket (1) Conversion Gasket Set FP-3802375 
Rebuilder SpecsBore: 4.0165"Stroke: 4.724"Rod Journal: 2.7160-2.7170"Main Journal: 3.2672-3.2682"Main Torque: 44, 88, 129 ft/lbsRod Torque: 22, 44 ft/lbs, +60 degreesHead Torque: First torque all bolts to 66 ft/lbs, then all bolts to 66 ft/lbs again. For the longest bolts only tighten in sequence 89 ft/lbs and then longest bolts only 89 ft/lbs again. Final stage is to then turn all bolts +90 degrees.Intake Valve Lash: .010" cold (.254 mm)Exhaust Valve Lash: .025" cold (.635 mm)