Caterpillar C7.1 Engine Intake Valve 336-5446 & Exhaust Valve 336-5447 | Heavy Duty Machinery Parts

Product Details

Product Overview

Upgrade your heavy-duty machinery with our premium set of Caterpillar C7.1 engine intake and exhaust valves. This critical component set includes the intake valve (Part No. 336-5446) and exhaust valve (Part No. 336-5447), specifically engineered for the Caterpillar C7.1 diesel engine platform. Designed to meet or exceed OEM specifications, these valves ensure optimal engine breathing, combustion efficiency, and long-term reliability for excavators, loaders, and industrial equipment operating in demanding environments worldwide. We serve a global clientele including markets in North America, Europe, the Middle East, and Asia-Pacific.

Key Features & Benefits

• Premium Alloy Construction: Manufactured from high-grade heat-resistant steel alloys to withstand extreme combustion temperatures and pressures.
• Precision Machining: CNC-machined valve stems and faces ensure a perfect seal, maximizing compression and reducing blow-by.
• Enhanced Durability: Hardened chrome-plated stems reduce wear on valve guides, extending the service life of the cylinder head.
• Optimized Performance: Improves air intake flow and exhaust gas evacuation, leading to better fuel economy and horsepower output.
• Direct OEM Replacement: Exact dimensions and tolerances match original Caterpillar parts for a hassle-free installation.

Technical Specifications

OEM Cross-Reference

This valve set is the direct replacement for the following original Caterpillar part numbers:

• Caterpillar Intake Valve: 336-5446
• Caterpillar Exhaust Valve: 336-5447
• Alternative / Superseded Numbers: 432-0086 (Intake), 432-0087 (Exhaust)

Compatibility

This product is specifically designed for the Caterpillar C7.1 diesel engine. Common applications include:

• Excavators: Cat 320 GC, 320, 323, 326
• Wheel Loaders: Cat 950 GC, 950L, 962L
• Industrial Engines: C7.1 (Used in various generator sets and industrial equipment)
• Agricultural Tractors: Challenger MT700 series

Note: Always verify your engine serial number and cylinder head specifications before ordering.

Global Supply & Distribution

We are a trusted global supplier of aftermarket diesel engine components. Our logistics network ensures fast and reliable delivery to industrial centers worldwide.

• Worldwide Shipping: We ship via DHL, FedEx, UPS, and sea freight (FOB/CIF terms available).
• Major Markets Served: United States, Canada, Germany, UK, UAE, Saudi Arabia, Australia, Singapore, South Africa, and Brazil.
• Fast Delivery: Orders are dispatched within 24-48 hours from our warehouse. Typical transit time is 3-7 business days for express air freight.
• Bulk Orders: Competitive pricing and volume discounts available for fleet operators and distributors.

Quality Assurance

• Manufacturing Standards: Produced in ISO 9001:2015 certified facilities.
• Certifications: Meets SAE and DIN material standards.
• Testing: Each valve undergoes 100% dimensional inspection and hardness testing before packaging.
• Warranty: 12-month warranty against manufacturing defects.

FAQ

Q: Are these valves compatible with the Cat C7.1 engine in my 320D excavator?
A: The C7.1 engine is primarily found in newer models like the 320 GC and 320 (Next Gen). The 320D typically uses the C6.4 or C7 ACERT engine. Please check your engine serial number prefix (e.g., C7.1 engines start with “C7.1”) to confirm compatibility. If your engine is a C7.1, these valves are a direct fit.

Q: Do I need to replace the valve seals and guides when installing these valves?
A: Yes, it is highly recommended to replace valve stem seals and inspect the valve guides whenever replacing valves. Worn guides can cause premature valve failure. We recommend purchasing a full valve stem seal kit (Part No. 336-5470) to ensure a complete and reliable rebuild.

Q: What is the difference between the intake (336-5446) and exhaust (336-5447) valve?
A: The intake valve (336-5446) has a larger head diameter (44.5mm) to allow more air into the cylinder. The exhaust valve (336-5447) has a smaller head (40.5mm) and is made from a more heat-resistant alloy to withstand the higher temperatures of exhaust gases. They are not interchangeable.