343-5964 Exhaust Valve Seat for C4.4 C6.6 C7.1 Engine | Perkins T406545

Product Overview

The 343-5964 Exhaust Valve Seat Insert (STD) is a high-performance cylinder head component designed for Caterpillar and Perkins medium-duty engines. This standard size (STD) insert provides a durable, heat-resistant sealing surface for the exhaust valve, ensuring maximum compression and preventing cylinder head wear under high-temperature operating conditions.

Part Numbers & Cross-Reference

This part is a direct interchangeable component for the following OEM numbers:

• Caterpillar (CAT) Number: 343-5964 / 3435964
• Perkins Number: T406545
• Aftermarket SKU: B343-5964
• Condition: Brand New Replacement Part

Technical Specifications

• Part Name: Exhaust Valve Seat Insert (STD)
• Material: High-Chromium Alloy Steel (Superior Heat & Corrosion Resistance)
• Dimensions: Inner Diameter 28.15 mm (approx. 1.38 × 1.38 × 0.08 in)
• Weight: Approx. 0.03 – 0.1 lbs (0.01 – 0.04 kg)
• Application: Cylinder Head Exhaust Port

Applications & Engine Compatibility

Specially engineered for engines with ACERT technology and electronic fuel systems:

• Compatible Caterpillar Engines: CAT C4.4, C4.4B, C6.6, C7.1 ACERT
• Compatible Perkins Engines: 1204E, 1204F, 1206E, 1206F Series
• Excavators: 312E, 320E, 323E, 320F, 323F, 325F
• Wheel Loaders: 924K, 930K, 938K, 950K, 950L, 962L
• Paving & Compaction: CS54B, CP54B, CS64B, CS74B
• Industrial: Marine engines, Generator sets, and Agricultural equipment

B2B Export Advantage

• High-Precision Manufacturing: Built to exact OEM specifications for fit and durability.
• Distributor Support: Wholesale pricing available for international parts distributors and engine rebuild shops.
• Global Shipping: Specialized export packaging with fast dispatch via DHL, FedEx, or air/sea freight.