4W0452 - SEAL GROUP-CRANKSHAFT 4W452 3256191 Fits Caterpillar !!!FREE SHIPPING!

One New Aftermarket Replacement Rear Crankshaft Seal Group Fits Caterpillar (Fits CAT) 3300-Series and Related Engines

This rear crankshaft oil seal group is Fits Caterpillar 3304 and 3306 engine family and a wide range of Fits CAT equipment powered by those engines. Installed at the rear of the crankshaft, this seal prevents oil from escaping the engine block, protects critical rotating components, and maintains proper lubrication system integrity across demanding heavy-duty applications.

Specifications

• Length: 9.65 in.
• Width: 8.27 in.
• Depth: 1.97 in.
• Inner Diameter: 157.35 mm (approx. 158 mm shaft / 186 mm bore)
• Weight: 0.80 lbs.

Compatible Models

Fits Caterpillar Articulated Dump Trucks: D250B, D250E, D250E II, D300B, D300E, D300E II, D30C, D30D, D35C, D350C, D350D

Fits Caterpillar Challengers: 55, 65, 65B, 65C, 65D, 70C

Fits Caterpillar Earthmoving Compactors: 815B, 815F, 816F

Fits Caterpillar Engines: 3196, 3304, 3304B, 3306, 3306B, 3306C, 1673C, 3176C, G3304B, G3306, SR4

Fits Caterpillar Excavators: 225, 235, E240, E300, E300B, EL300, 219, 219D, 225B, 225D, 229, 229D, 235B, 235C, 235D, 215B LC, 215B SA, 215C LC, 215D, 330, 330 L, 330B, 330B L, 330B LN, 350 L, 350-A L, 365B L

Fits Caterpillar Motor Graders: 12G, 12H, 12H ES, 12H NA, 120G, 130G, 140, 140G, 140H, 140H ES, 140H NA, 143, 143H, 14G, 14H NA, 160H, 160H ES, 160H NA, 163, 163H NA

Fits Caterpillar Scrapers: 621E, 621R, 621S, 627B, 627E, 627E PP

Fits Caterpillar Skidders / Pipelayers: 517, 517C A, 517G R, 518, 518F B, 527, 527C A, 527G R, 528, 572R, 561D

Fits Caterpillar Track Loaders: 953, 955F, 955L, 963, 963 LGP, 973, 973C, 973C LGP, 973 LGP, 977, 977L

Fits Caterpillar Track-Type Tractors: D4E, D4H, D5B, D5H, D6D, D6G2 XL, D6H, D7G, D7G2, D7H

Fits Caterpillar Wheel Loaders: 924G, 930, 930R, 930T, 930T II, 936, 936E, 936F, 950B, 950E, 950F, 950F II, 966C, 966D, 966E, 966F II, 966G, 970F, 972G

Fits Caterpillar Compactors / Other: CB-534, CP-643, CP-653, CS-643, CS-653, 5, 5A, 5S, 4A, 6, 48, R1300

Replaces Part Number(s):

4W0452, 4W-0452, 4W452, 4W-452, 4W0452-A, 4W452-A, 1N3216, 1N3216-A, 3256191, 325-6191

Aftermarket Interchange Numbers

Also known as Seal GP-Crankshaft and Seal GR-Crankshaft in Fits CAT parts catalogs. Cross-references 1N3216 and 3256191 confirmed across multiple sources.

New aftermarket replacement part - not remanufactured, not used.