Cat 257B3 Series 3 Multi Terrain Loader Engine Parts 

Cat C3.4 DIT Engine Parts 

Located in the USA with delivery available to Canada, Caribbean and worldwide. 
Crankshafts
Engine Overhaul Kits
Engine ReRing Kits 
Connecting Rods
Engine Oil Pumps 
Turbocharger Rebuild Kits 
Engine Oil Coolers 
Camshafts
Lifters / Tappets 
Crankcase Soft Plug Sets
Cylinder Head Soft Plug Sets 
Injectors
Glow Plugs 


Cat 257B3 Crankshaft Kits include: crankshaft, big end connecting rod bearings, main crankshaft bearings, thrust washers

Cat 257B3 Engine ReRing Kit includes: piston rings, rod bearings, main bearings, thrust washers, 
upper engine gasket and seal set, lower engine gasket and seal set with front and rear crankshaft seals. 

Cat 257B3 Engine Overhaul Kit includes: pistons, piston rings, piston pins, piston pin retainers,  
rod bearings, main bearings, thrust washers, piston pin bushings, 
upper engine gasket and seal set, lower engine gasket and seal set with front and rear crankshaft seals. 

Cat 257B3 Piston Size Options in inches :   ( diameter at piston skirt ) 
Standard Piston: 3.6990 to 3.7002 Inch 
.010 Inch Oversize Piston: 3.7089 to 3.7100 Inch 
.020" Oversize Piston: 3.7187 to 3.7199 Inch 

Cat 257B3 Piston Size Options in metric millimeters :   ( diameter at piston skirt ) 
​Standard Piston: 93.955 to 93.985MM 
.25MM Oversize Piston: 94.205 to 94.235MM
.50MM Oversize Piston: 94.455 to 94.485MM 

Cat 257B3 Main Bearing Size Options  in inches: 
Standard Main Bearing Journal 3.0691 to 3.0697 Inch 
.010" Undersize Main Bearing Journal 3.0591 to 3.0597 Inch
.020" Undersize Main Bearing Journal 3.0491 to 3.0497 Inch 
.030" Undersize Main Bearing Journal 3.0391 to 3.0397 Inch
.040" Undersize Main Bearing Journal $3.0291 to 3.0297 Inch 

Cat 257B3 Main Bearing Size Options in metric millimeters : 
Standard Main Bearing Journal 77.955 to 77.970MM  
.25MM Undersize Main Bearing Journal 77.705 to 77.720MM 
.50MM Undersize Main Bearing Journal 77.455 to 77.470MM 
.75MM Undersize Main Bearing Journal 77.205 to 77.220MM
1.00MM Undersize Main Bearing Journal 76.955 to 76.97MM 

Cat 257B3 Rod Bearing Size Options  in inches: 
Standard Rod Bearing Journal 2.2817 to 2.2823 Inch 
.010" Undersize Rod Bearing Journal 2.2719 to 2.2724 Inch
.020" Undersize Rod Bearing Journal 2.2620 to 2.2626 Inch 
.030" Undersize Rod Bearing Journal 2.2522 to 2.2528 Inch
.040" Undersize Rod Bearing Journal  2.2422 to 2.2428 Inch 

Cat 257B3 Rod Bearing Size Options in metric millimeters : 
Standard Rod Bearing Journal 57.955 to 57.970MM  
.25MM Undersize Rod Bearing Journal 57.705 to 57.720MM 
.50MM Undersize Rod Bearing Journal 57.455 to 57.470MM 
.75MM Undersize Rod Bearing Journal 57.205 to 57.220MM
1.00MM Undersize Rod Bearing Journal 56.955 to 56.970MM 

We have small stock of new engine parts from old workshop inventory. 


Note: These newer Cat C3.4 DIT Series 2 engines and Cat C3.4 DIT Series 3 engines can have different pistons, compression ratios, different crankshafts, and different internal parts than the older 3044 and C3.4 engine. Please provide your serial number to determine the correct parts for your engine. 

Contact us for Cat 257B3 Series 3 engine parts 

Email: EngineParts@HeavyEquipmentRestorationParts.com 
Alternate email: EngineParts2@gmail.com 

Phone: 269 673 1638
Fax:  269 673 7226
Text: 269 760 8652

Website: www.HeavyEquipmentRestorationParts.com 

Heavy Equipment Restoration Parts LLC
4730 118th Ave
Fennville Michigan 49408 USA 

Cat 257B3 Series 3 Multi Terrain Loader Engine Parts