WESPC Intake Valve Seat 3314A251 for Perkins 1104D44T 1106DE70TA diesel engines

WESPC Intake Valve Seat 3314A251 for Perkins 1104D44T 1106DE70TA diesel engines

Application:

Perkins 1104D-E44T, 1106C-E66TA, 1106D-E66TA, 1106D-E70TA, and 1106D-E70T six-cylinder diesel engines (6.6-7.0 L displacement), as well as Cater C6.6, C7.1, and C7 industrial engines. This intake valve seat insert is specifically designed for turbocharged diesel applications where high combustion temperatures and pressures demand superior wear resistance. Each six-cylinder engine requires 6 intake valve seat inserts. Commonly found in FG Wilson 100-200 kVA generator sets, medium-duty agricultural tractors, compact wheel loaders, and industrial power units operating in continuous-duty environments.

Technical specifications:

Outer diameter: 38.10 mm (1.500 inches) 
Inner diameter: 31.75 mm (1.250 inches) 
Thickness: 7.00 mm (0.276 inches) 
Seat angle: 45° precision-machined sealing surface 
Hardness: ≥ 45 HRC after heat treatment 
Material composition: High-chrome stainless steel forging 
Surface finish: Ra 0.4-0.8 µm on sealing face
Interference fit: 0.05-0.10 mm press-fit into cylinder head
Quantity per engine: 6 pieces for inline-6 cylinder configuration

Material & performance features:

Manufactured from premium high-chromium stainless steel forging containing 12-15% Cr, 1.0-1.5% C, with additions of Mo and V for enhanced wear resistance. The seat undergoes precision CNC profiling to achieve exact 45° seat angle with concentricity within 0.01 mm, ensuring positive sealing with the valve face and preventing blow-by. The material receives vacuum heat treatment to achieve minimum 45 HRC hardness throughout the entire cross-section, maintaining structural integrity at operating temperatures exceeding 600°C.

Interchange part numbers:

PERKINS 3314A251 (primary OEM specification)
PERKINS 3314A261 (exhaust valve seat counterpart - DO NOT use for intake)
CATER 377-0399, 276-8132, 3770399, 2768132 
KMP Brand 3314A251 (warranty-backed aftermarket)
Heavy Duty Pros 3314A251 (industrial supplier)
BAILEPART BP-3314A251 (quality aftermarket)