The 120166350 intake valve is engineered for Perkins 104-22, 403C-15, 403C-17, 403D-15, 403D-17, 404C-22, 404C-22T, 404D-22, 404D-22T, and 404D-22TA four-cylinder diesel engines. These 1.4L to 2.2L powerplants are extensively deployed in compact agricultural tractors (Massey Ferguson), skid steer loaders (Case-IH 410, 420, SR130, SR150, SR175, SV185), mini excavators, telehandlers, and generator sets producing 20-50 kVA continuous output. The valve provides critical sealing in the combustion chamber intake port, operating in direct-injection diesel environments where intake air temperatures reach 150°C and cylinder pressures exceed 180 bar. This component is also compatible with Shibaura N844L engine derivatives used in similar compact equipment applications.
Technical Specifications
Stem diameter: 7.0 mm
Overall length: 99.6 mm (from valve tip to head face)
Head diameter: 37.0 mm
Sealing angle: 45° (ground and lapped sealing face)
Engine displacement coverage: 1.4 L to 2.2 L (104, 403, 404 series)
Quantity per engine: 4 pieces (one per cylinder)
Weight per unit: 0.06 kg
Operating temperature rating: -40°C to +650°C continuous service
Maximum valve lift: 12.5 mm (engine-specific camshaft profile dependent)
Stem-to-guide clearance: 0.03-0.06 mm (standard specification)
Material & Performance Features
Manufactured from high-grade alloy valve steel with precision machining and advanced surface treatment processes, the 120166350 intake valve delivers exceptional strength and wear resistance in severe-service diesel environments. The precision-ground stem surface (diameter tolerance ±0.01 mm) ensures consistent guide bushing lubrication and minimizes carbon buildup that can cause valve sticking. The valve head is engineered to withstand extreme thermal cycling and oxidation at operating temperatures up to 650°C typical of direct-injection diesel combustion with turbocharging. Advanced surface hardening treatment on the stem creates a wear-resistant layer preventing stem scuffing and extending guide bushing service life beyond 4000 operating hours.
Interchange Part Numbers
Primary reference: Perkins 120166350
Cross-reference variants: 120166380, 120166390
Case-IH equipment cross-reference: 110136400C1
Compatible valve spring: 198216700 (ensures proper seat pressure of 280-320 N at installed height)