C3968563 XCMG GR2605 motor grader oil seal

C3968563 (3968563) is a genuine crankshaft rear oil seal from DCEC and CCEC, with double-lip, steel-cased and felt buffer structure. It is specially designed for Cummins 6CT8.3, L9, ISL, ISDe, ISC and QSB6.7 series engines. Made of FKM, steel skeleton and inner felt dustproof layer, it features high temperature resistance, oil resistance, aging resistance and mud resistance. Installed between the rear crankshaft and flywheel housing, it seals the crankcase oil to prevent oil leakage and dust or mud intrusion, suitable for construction machinery, heavy trucks, buses and generator sets.

Part No.: C3968563 (3968563), replacement: 3968563L

Brand: Genuine DCEC / CCEC

Type: Crankshaft rear oil seal, double-lip, cased, felt type

Material: FKM rubber, steel skeleton, inner felt dust layer

Size: ID 107.95mm × OD 139.7mm × W 16mm

Seal type: Double lip (primary + secondary) with felt dust seal

Temperature range: -40℃ to +200℃

Applicable media: Diesel engine oil, synthetic oil, gear oil

Installation direction: Spring toward the inner crankcase

Weight: Approx. 0.16kg

Cross reference: 4991305, 4890832, 3968562 (front seal)

DCEC: 6CT8.3, 6C8.3 mechanical and electronic injection engines; ISLe9, ISL9, L9, ISL G China Stage 3–5 engines; ISDe6.7, ISD6.7, QSB6.7 electronic injection engines; ISC8.3, GTA8.3, G8.3 diesel and gas engines.

CCEC: M11, ISM11, QSM11 (later models).

Construction machinery: Excavators (Komatsu, Caterpillar), loaders (XCMG, LiuGong, Lonking), bulldozers, rollers, graders, pump trucks, cranes.

Commercial vehicles: Dongfeng Tianlong, Tianjin, Dalishen; Foton Auman, Shacman Delong, Liuqi Chenglong with Cummins 6CT / ISL engines.

Generator sets: 150–300kW Cummins gensets with 6CT, ISL, ISDe engines.

Buses & special vehicles: Yutong, King Long buses with Cummins 6L / ISC engines.

Mounted at the rear crankshaft (flywheel side), between the flywheel housing and crankshaft journal. Main functions: seal crankcase oil, prevent leakage, resist dust and water, block mud and sand.