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Cat® 339-9637 Engine Cylinder Head Exhaust Valve for C4.4, C6.6, and C7.1 Engines

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  2. Cat® 339-9637 Engine Cylinder Head Exhaust Valve for C4.4, C6.6, and C7.1 Engines
Cat® 339-9637 Engine Cylinder Head Exhaust Valve for C4.4, C6.6, and C7.1 Engines

Ensure peak engine durability with the Cat® 339-9637 Coated Exhaust Valve. Designed for C4.4, C6.6, and C7.1 engines, this high-temperature resistant valve ensures efficient gas discharge for Cat 320D2, 950GC, and D6K machinery. Precision-engineered for heavy-duty B2B applications and long-term reliability. Shop now for global export.

Technical Specifications 339-9637 - Coated Exhaust Valve for CAT C4.4/C7.1 Engines

339‑9637 Coated Exhaust Valve — High‑Temperature Corrosion‑Resistant Engine Exhaust Valve

The Cat® 339‑9637 Coated Exhaust Valve is a core valvetrain component exclusively for CAT C4.4, C6.6 and C7.1 diesel engines. Adopting high‑performance anti‑corrosion coating technology, it endures ultra‑high exhaust‑gas temperature, thermal impact and hot‑gas corrosion. It accurately controls exhaust‑gas discharge timing and volume, maintaining stable cylinder compression and improving engine power output and fuel‑burning efficiency under heavy‑load working conditions.

1. Technical Specifications

Technical ParameterImperial SizeMetric Size
Part Number339‑9637339‑9637
Product TypeSurface‑Coated Engine Exhaust Valve
Overall Dimensions4.3 in × 1.3 in × 1.3 in109.2 mm × 33.0 mm × 33.0 mm
Applicable Engine ModelsCAT C4.4, C6.6, C7.1 Series Diesel Engines
Core FeatureHigh‑Temperature‑Resistant, Anti‑Hot‑Corrosion & Anti‑Carbon‑Deposit Coating
Core FunctionExhaust‑Gas Discharge Control & Combustion‑Chamber Sealing

2. Machine Compatibility

This OEM‑standard coated exhaust valve is widely matched for CAT construction machinery powered by C4.4/C7.1 engines:

  • Excavators: 320, 320D2, 320GC, 323, 326, 330, 330GC, 333, 336GC

  • Wheel Loaders: 924K, 930K, 938K, 950GC, 950M, 962M

  • Dozers: D3K2, D4K2, D5K2, D6K2, D6N Track‑Type Tractors

  • Paving & Compaction Equipment: AP‑655D Pavers, CS‑56B/64B Rollers, CP‑54B Compactors, CW34

  • Industrial Power Units: C4.4/C7.1 Generator Sets & Mobile Hydraulic Power Stations

3. Key Features & Advantages

  • Extreme High‑Temperature Endurance: Advanced protective coating prevents valve burning, warping and deformation under continuous heavy‑load high‑temperature exhaust‑gas impact.

  • Superior Hot‑Corrosion & Carbon‑Fouling Resistance: Special surface treatment reduces friction loss, blocks high‑temperature exhaust‑gas corrosion and inhibits carbon buildup, extending service life of valve and valve seat.

  • 1:1 OEM‑Precision Direct Replacement: Strictly manufactured to CAT original dimensional tolerances, ensuring perfect valve‑seat sealing and stable engine timing performance.

  • Optimized Exhaust‑Gas Scavenging: Precision‑machined valve‑head profile reduces exhaust backpressure, improves gas‑exchange efficiency and enhances overall engine power output.

Commercial Reference Information
Product: Engine Coated Exhaust Valve
Cross Part Number: 3399637
MOQ: 1 Unit
Warranty Period: 6‑12 Months

For bulk wholesale, technical consultation and engine‑valve component solutions:

Xuzhou Sinoswift Import & Export Co., Ltd.
Contact: +86 13701956981
Email: [email protected]

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