21388920 Bushing | Genuine Volvo Penta Part

🔧 Product Description

Precision steering-system bushing used at the steering-cylinder mounting and pivot points on compatible Volvo Penta DPH, DPR and DPI drive installations. It supports the cylinder joint, maintains correct alignment and limits free play as steering loads are transferred through the transom shield and drive steering linkage.

🚤 Compatibility

• Engine Family: DPH, D, TSK, DPR
• HP Range: 150-480 HP

Full model list at the end of this description.

⚙️ Key Features

• Genuine Volvo Penta steering-cylinder pivot bushing
• Supports accurate cylinder alignment and smooth steering movement
• Helps control radial play at the steering mounting point
• Used with the applicable wear washers and steering-cylinder hardware
• Sold individually; required quantity varies with single- or twin-drive installation
• Engine type: Marine diesel sterndrive installations using the listed DPH, DPR or DPI steering assemblies
• Quantity varies by assembly, most commonly four

🔌 Function

Provides a low-friction bearing surface at the steering-cylinder mounting point. The bushing keeps the cylinder centred, permits controlled pivot movement and prevents metal-to-metal wear in the steering linkage.

⚠️ Common Signs of Failure

• Excessive steering free play or wandering
• Clunking from the steering-cylinder mounting point
• Uneven or jerky steering-cylinder movement
• Visible oval wear, cracking or looseness in the bushing
• Accelerated wear of the adjacent pin, washer or mounting bore

🛠️ Service Notes

• Check the housing bore and the shaft or pin that runs in the bushing before fitting a new one; a worn or scored mating part will chew out a new bushing quickly
• Press bushings in squarely with a press and a correctly sized drift or mandrel — hammering one straight in distorts it and ruins the fit
• Where the bushing has an oil hole, groove or slot, line it up with the feed in the housing before it is pressed home
• Lubricate on assembly with the oil or grease specified for that part of the engine or drive, and follow the manual if it calls for the bore to be checked or sized after fitting
• Do not soak a self-lubricating bushing in solvent or degreaser, and keep sealant and thread lock off the running surface

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 3589516 - associated steering-system wear washer; not a substitute
• 21745119 - associated steering cylinder reference; not a substitute

Aftermarket / Verified Equivalents

• NATO Stock Number: 3120-14-565-5146

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D6-330A-F, D6-370A-F, D6-300A-F, D6-300A-G, D6-340A-G, D6-380A-G, D6-400A-G, D6-440A-G, D6-400A-F, D6-480A-G
• Volvo Penta D4-260A-F, D4-300A-F, D4-225A-F, D4-150A-G, D4-230A-G, D4-270A-G, D4-320A-G, D4-300A-G
• Volvo Penta TSK DPH-E, TSK DPI-A, TSK DPI-A2, TSK DPH-E1
• Volvo Penta DPH-D1, DPH-E
• Volvo Penta DPR-D