Caterpillar original High-performance Diesel Fuel Components 173-9272 0R-9349 Replacement for CAT 3126 3126B 3126E Diesel Engines, Cross Reference 10R-0782 Fuel Injection Parts original new injector

For B2B parts distributors and heavy equipment service teams sourcing specification-matched replacement components for CAT 3126 series diesel engines, the 173-9272 fuel injector is a dedicated fuel injection nozzle assembly built for original equipment replacement. As part of the CAT 3126 product line, this diesel component belongs to the engine’s fuel injection system, and carries the primary OE identifier 173-9272, which is also cataloged as 1739272 without hyphenation. It is classified as a heavy-duty replacement part for compatible diesel engine platforms.

This replacement injector adheres to OEM-equivalent specification standards, and supports cross-reference compatibility with common alternative part numbers 10R0955, 10R1273, and 20R2057. The broad interchange number coverage simplifies catalog lookup and inventory alignment for B2B purchasers, as the unit maps to multiple part numbering systems used across regional and global heavy-duty parts supply chains. It reduces the need for buyers to source exclusively under the core OE number for compatible replacement stock.

As a heavy-duty diesel fuel system component, it is suitable for a range of professional use cases including industrial equipment, marine vessels, commercial trucks, stationary generator sets, and construction machinery. It is also compatible with Freightliner, Peterbilt, Kenworth, and Blue Bird equipment powered by 3126, 3126B, or 3126E diesel engines. The unit is structured as a dedicated aftermarket offering for B2B customers serving heavy equipment operation, parts distribution, and repair service channels.