312-6388 Hoist Cylinder Seal Kit for Caterpillar Trucks 770 772

312-6388 Hoist Cylinder Seal Kit – High-Quality Aftermarket Replacement for Caterpillar Trucks

Restore leak-free hoist cylinder performance in your Caterpillar dump truck with this premium aftermarket 312-6388 hoist cylinder seal kit. Engineered as a direct OEM replacement, it includes all necessary high-grade seals to rebuild the hoist cylinder, preventing hydraulic fluid leaks and ensuring smooth, reliable bed raising/lowering in demanding haul cycles.

Key Features

Stops Hydraulic Leaks: Premium seals prevent fluid loss, contamination, and cylinder drift for safe, efficient load dumping.
Direct Fit Installation: Matches genuine Cat specs for quick rebuild without modifications – minimize downtime during hoist maintenance.
Built Tough for Heavy Duty Use: Durable materials resist pressure, wear, heat, and harsh conditions for long-lasting reliability in mining/quarry operations.
Cost-Effective Alternative: Full kit performance at aftermarket pricing – ideal for routine maintenance and fleet repairs.
Fast Shipping: In stock and ready to ship within 1-3 days.

Compatible Equipment Models

Tractors: 770 772 Caterpillar

Seal Kit Related Parts

Part No	Qty	Parts name
1J-2176	1	SEAL-O-RING
289-2930	1	SEAL-WIPER
289-2931	1	SEAL-WIPER
4T-8695	1	SEAL AS
7J-3868	1	SEAL-RING
9J-3053	1	SEAL-RING

Specifications

Part Number	312-6388 (3126388)
Part Type	Hoist Cylinder Seal Kit / Service Kit
Application	Hydraulic Cylinder Rebuild
Brand	WINSCHEN
Country of Origin	China
SKU	CTC-312-6388
MOQ	10 SET
Delivery Time	1-3 business days

Questions? Contact us for fitment confirmation or bulk pricing. We stand behind our parts with fast shipping and easy returns.

Related Caterpillar Seal Kit Categories

Browse more Caterpillar replacement parts or compare other hydraulic cylinder seal kits. For fitment confirmation, send the OEM part number, machine model and serial number through our inquiry form or WhatsApp.