WESPC Valve Guide 3313A035 for Perkins six cylinder diesel engines

WESPC Valve Guide 3313A035 for Perkins six cylinder diesel engines

Application:

Perkins 1106C-E66TA, 1106D-E66TA, and related six-cylinder diesel engines (6.6 L displacement), as well as Cater C6.6, C7.1, and C7 industrial engines. This valve guide provides precise alignment and controlled lubrication for both intake and exhaust valves in high-temperature, high-vibration diesel applications. Each six-cylinder engine requires 12 guides (6 intake, 6 exhaust). Common applications include FG Wilson 100-200 kVA generator sets, Massey Ferguson 5465/5475/6475 series agricultural tractors, JCB heavy excavators, and various industrial power units operating in continuous-duty environments. The guide ensures proper valve stem alignment, oil control, and heat transfer from the valve to the cylinder head.

Technical specifications:

Overall length: 46.40 mm (1.827 inches) 
Outer diameter (large end): 13.30 mm (0.524 inches) 
Outer diameter (small end): 12.00 mm (0.472 inches) 
Inner diameter (valve stem bore): 10.00 mm (0.394 inches) for 9.00 mm valve stem 
Interference fit: 0.03-0.08 mm press-fit into cylinder head
Material thickness: Varies from 1.15-2.15 mm along length
Surface finish: Inner bore Ra 0.4-0.8 µm after honing
Hardness: 180-220 HB (Brinell) for cast iron construction

Material & performance features:

Manufactured from high-grade pearlitic cast iron (FC250/FC300 grade) or sintered iron alloy with ISO9001 certified production. The material provides 250-300 MPa tensile strength and excellent wear resistance for continuous valve stem movement at engine speeds up to 2,200 rpm. The inner bore receives precision honing to achieve cross-hatch pattern at 45-60° angle, ensuring optimal oil retention and controlled lubrication between valve stem and guide.
The guide's stepped design provides positive location in the cylinder head with 0.03-0.08 mm interference fit, preventing rotation while allowing heat transfer. Thermal expansion coefficient of 10-12 × 10⁻⁶/°C matches the aluminum cylinder head, maintaining proper clearance across operating temperatures from -30°C to +250°C. Material formulation includes 3.0-3.5% carbon and 1.5-2.0% silicon for enhanced machinability and wear resistance.

Interchange part numbers:

PERKINS 3313A035 (primary OEM specification) 
MAGURO 3313A035-MG (aftermarket brand) 
KMP Brand 3313A035 (warranty-backed aftermarket)
Heavy Duty Pros 3313A035 (industrial supplier) 
AGCO/Massey Ferguson application reference (via AGCO parts system)