C168 S394 S395 Timing Chain Kits For Chevrolet
The DUHUI Bearing C168 timing chain kit is an OE-replacement component for General Motors vehicles equipped with 6.0L, 6.6L, and 7.0L big block V8 engines. This timing chain kit includes the timing chain (C168), cam sprocket (S394), and crank sprocket (S395), ensuring proper camshaft-to-crankshaft synchronization for optimal engine performance. Manufactured to match original equipment specifications, this kit delivers reliable performance for compatible GM medium and heavy-duty trucks.
Technical Specifications
| Specification | Value / Detail |
|---|---|
| DH Code | |
| Part Number | C168 |
| Kit Type | Timing Chain Kit |
| Timing Chain | C168 |
| Cam Sprocket | S394 |
| Crank Sprocket | S395 |
| Engine Displacement | 6.0L / 6.6L / 7.0L / 7.4L |
| Valve Configuration | OHV |
Important: All information on this page is for reference only. Please verify OE numbers, dimensions, and vehicle fitment against your original part before ordering. Contact us for fitment confirmation.
DH Code & OE Numbers & Reference Numbers
DH Code:
OE Numbers:
3891519, 3891517, 3891518
Reference Numbers (Interchange):
Enginetech: TS168
Melling: 4SR50
C168: 3891519
S394: 3891517
S395: 3891518
Vehicle Fitment
CHEVROLET: C2500 1979-1986, C3500 1979-1986, K2500 1979-1986, K3500 1979-1986, Suburban C1500/C2500/K1500/K2500 1973-1991, Blazer 1973-1991, V2500 Suburban 1990, V30 1987-1988, V3500 1989-1990
GMC: B6000 1980-1985, C1500/C2500/C3500 1973-1986, K1500/K2500/K3500 1973-1986, Suburban C1500/C2500/K1500/K2500 1973-1991
Engine: 6.0L V8 (VIN P), 6.6L V8 (VIN N), 7.0L V8 (VIN W), 7.4L V8 (VIN N, W) – Big Block Chevrolet
Please verify OE number, dimensions and vehicle configuration before ordering.
Product Features
- Complete timing chain kit includes chain, cam sprocket, and crank sprocket for a full replacement.
- Pre-stressed chain design reduces stretch and increases chain life. Hardened chain pins increase durability.
- Heat-treated gear sprocket teeth reduce wear and increase corrosion resistance.
- Designed specifically for GM big block V8 engines from 1969-1990.
- OE-grade materials and manufacturing standards ensure durability and long service life.
Installation Notes
- Verify timing marks on both sprockets are properly aligned before installation.
- Inspect timing chain guides and tensioner for wear – replace if necessary.
- Check crankshaft and camshaft keyways for damage before installing new sprockets.
- Torque cam sprocket bolt and crank sprocket bolt to manufacturer specifications.
- After installation, rotate engine manually to verify proper timing alignment.
About DUHUI Bearing
Manufactured by DUHUI Bearing – an automotive bearing supplier established in Zhejiang, China, in 2003. DUHUI produces timing chain kits and automotive components to OE specifications. Contact us
