WESPC Intake Valve 3142L061 for Perkins four and six cylinder diesel engines

WESPC Intake Valve 3142L061 for Perkins four and six cylinder diesel engines

Application:

Perkins 1004.4 and 1006.6 series four and six-cylinder diesel engines (4.4-6.6 L displacement), specifically models AA, AB, AC, AD, AE, AG, AH, YA, YB, YC, YD, YE series. This intake valve is extensively deployed in agricultural tractors including Massey Ferguson 3635, 4225, 4235, 4240, 6110, 6120, 6160, 6170 series, Claas combine harvesters (Dominator, Mega series), and Landini tractors (7860, 8860, Atlantis, Atlas, Legend series).

Technical specifications:

Valve type: Intake (suction) valve for four-stroke diesel engines
Head diameter: 45.0 mm (1.772 inches) 
Stem diameter: 9.5 mm (0.374 inches) 
Overall length: 122.8-122.9 mm (4.835-4.839 inches) 
Seat angle: 45° precision-ground sealing face 
Stem type: Single-groove for split collet retention (7° collet angle)
Tip configuration: Induction-hardened to resist wear from rocker arm contact
Weight: 0.14 kg (140 grams) per valve 
Quantity per engine: 4 pieces for 1004.4 series (4-cylinder), 6 pieces for 1006.6 series (6-cylinder)

Material & performance features:

Manufactured from high-alloy heat-resistant steel containing 0.35-0.45% carbon, 1.5-2.5% chromium, with additions of manganese and silicon for enhanced high-temperature strength and wear resistance . The valve head undergoes solution treatment at 1,050-1,100°C followed by age-hardening to achieve 25-30 HRC hardness, maintaining structural integrity at intake air temperatures up to 200°C in turbocharged applications.The stem receives gas nitriding treatment creating a 0.02-0.04 mm deep surface layer exceeding 700 HV hardness to resist scuffing during prolonged operation. The 45° seat angle is precision-machined to Ra 0.4-0.8 µm finish, ensuring positive sealing with the valve seat insert and preventing intake air leakage and compression loss. The tip is induction-hardened to 50-55 HRC to resist cupping under 800-1,000 N valve spring loads .

Interchange part numbers:

PERKINS 3142L061 (primary OEM specification) 
PERKINS 3142L071 (functionally equivalent, same dimensions) 
PERKINS 3142L051 (functionally equivalent, same dimensions) 
KMP Brand 3142L061-KMP (warranty-backed aftermarket)
MASU 02/200051 (aftermarket reference) 
CATER 6I-0282 (Cat application cross-reference) 
MASU 02200051 (alternative aftermarket) 
Massey Ferguson 3637042M1 (tractor application)