Bomag 05741860 Floating Wrist Pin

The Bomag 05741860 Floating Wrist Pin is a genuine OEM component designed for Bomag tandem rollers across the BW 100, BW 115, BW 120, BW 125, BW 131, BW 135, and BW 138 series. As a direct OEM replacement, this wrist pin is manufactured to the same specifications as the original, ensuring a correct fit within the engine assembly. Compatible models include the BW 100 AD-4, BW 100 AC-4, BW 120 AD-5, BW 120 AC-5, BW 138 AD-5, BW 138 AC-5, BW 131 AD-5, BW 131 ACW-5, and many additional BW-series tandem roller variants. Sourcing a genuine OEM part number 05741860 eliminates the guesswork that comes with engine rebuilds and keeps your tandem roller running to its original design standard.

Key Features

• Genuine OEM Precision — manufactured to exact dimensional tolerances for correct piston-to-connecting-rod clearance, preventing slop, accelerated wear, or oil bypass at the pin bore
• Direct Engine Fit — installs into the piston bore and connecting rod as a drop-in replacement with no machining or modification to mating components
• Broad Tandem Roller Coverage — fits BW 100, BW 115, BW 120, BW 120 SL-5, BW 120 SLC-5, BW 125, BW 131, BW 135, and BW 138 tandem rollers, including AC, AD, ACW, CC, and SL variants across the -3, -4, and -5 generations
• Engine Integrity Restored — a worn or undersized wrist pin causes piston knock, increased blowby, and eventual engine failure; replacing it with part number 05741860 restores proper combustion dynamics and protects the engine long-term

The floating wrist pin — also called a piston pin or gudgeon pin — connects the piston to the small end of the connecting rod inside the engine cylinder. Unlike a fixed pin, a floating design rotates freely in both the piston bosses and the rod eye, distributing wear evenly across all bearing surfaces and reducing stress concentrations during combustion. When a wrist pin wears, becomes scored, or develops excessive clearance, it produces a sharp metallic knock at idle, allows combustion gases to bypass the piston rings, and can ultimately damage the cylinder bore or connecting rod — making timely replacement critical to engine longevity on any tandem roller application.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

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Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.