2H3939 Union for Caterpillar Equipment

2H3939 is a union used in Caterpillar equipment and engines. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

Fitment

• Gas engines: G3508, G3512, G3516
• Generator set engines: 3508, 3508B, 3512, 3512B, 3516, 3516B, G3516B
• Generator sets: 3508, 3508B, 3508C, 3512, 3512B, 3512C, 3516, 3516B, 3516C, C32, G3406, G3516B
• Industrial engines: 3406, 3408, 3412, 3412E, 3508, 3508B, 3512, 3516, D343
• Locomotive engines: 3508C, 3512C
• Marine auxiliary engines: 3508B, 3508C, 3512B, 3512C, 3516B, 3516C
• Marine engines: 3208, 3306, 3406, 3406B, 3408, 3412, 3508, 3508B, 3508C, 3512, 3512B, 3512C, 3516, 3516B, 3516C, D326F, D333A, D333B, D334, D342C, D375D
• Marine gears: 3181, 3192
• Marine transmissions: 7211, 7231, 7261, 7271
• Motor graders: 12G, 16
• Petroleum engines: 3508B, 3508C, 3512, 3512C, 3516C
• Power modules: C32, PM3412, PM3508, PMG3516
• Track loaders: 977K, 983
• Track-type tractors: D9G
• Tractors: 768B, 772B, 776, 784C
• Trucks: 769, 769C, 773, 773B, 777, 785C, 789C, 793C
• Truck engines: 1673, 1673B
• Vehicular engines: 3508, 3512, 3516
• Wheel tractor-scrapers: 627, 627B, 631E, 631G, 633E, 637, 637B, 637D, 637E, 637G, 651E, 657B, 657E, 657G, 666
• Wheel tractors: 631C, 641B, 650B, 657B

Specifications