Water Bypass O-Ring Seal Cummins 43463A | 43463-A, 121236, EGA-1660

Reliable Sealing for Heavy-Duty Cummins Engines

The 43463A water bypass O-ring seal is a critical component designed to maintain a secure, leak-free connection within your engine’s cooling system. Engineered specifically for heavy-duty Cummins applications, including the popular N14 and NH/NT855 engine series, this high-quality elastomeric seal prevents coolant bypass leaks that can lead to engine overheating and costly downtime. This part is also available under the numbers: 43463-A, 121236, EGA-1660, and FP-43463A.

Engineered for Extreme Conditions

Manufactured from premium-grade materials, this O-ring seal is built to withstand the harsh environment of heavy-duty diesel engines. It offers exceptional resistance to high temperatures, constant pressure cycles, and exposure to engine coolants and oils. Replacing worn or degraded seals during routine maintenance or water pump service ensures your cooling system operates at peak efficiency.

Key Features & Benefits

• Perfect Fit: Precision-engineered to match exact Cummins specifications for a reliable, hassle-free installation.
• Durable Construction: Made from high-performance elastomer compounds that resist degradation from heat, pressure, and chemical exposure.
• Prevents Leaks: Ensures a tight seal on the water bypass line, protecting your engine from coolant loss and overheating.
• Broad Compatibility: Fits a wide range of Cummins diesel engines, including N14, NH, and NT855 models.

Cross-Reference / Interchange Part Numbers

This part replaces / is interchangeable with the following part numbers:

• 43463A
• 43463-A
• 121236
• EGA-1660
• FP-43463A
• M-43463A