21178216 Injector | Genuine Volvo Penta Part

🔧 Product Description

Brand-new genuine Volvo Penta nozzle-and-holder injector assembly for later-serial TAD420VE and TAD620VE engines. The calibrated injector meters and atomises fuel into the combustion chamber at the specified opening pressure.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD620VE

• Engine Family: TAD
• Serial Range: SN01099384-, Stage 2 and Tier 2

⚙️ Key Features

• Complete calibrated nozzle-and-holder assembly
• Applies from engine serial number 01099384 onward
• Used on four-cylinder TAD420VE and six-cylinder TAD620VE
• Precision multi-hole diesel nozzle
• Injector only; sealing washer and high-pressure pipe are separate
• Engine type: Volvo Penta four- and six-cylinder industrial diesel
• 6 used per assembly

🔌 Function

Meters and atomises high-pressure fuel into the cylinder at the correct opening pressure and spray pattern.

⚠️ Common Signs of Failure

• Hard starting or uneven idle
• White, black or blue exhaust smoke
• Diesel knock or high cylinder temperature
• Excess injector leak-off
• Poor spray pattern or nozzle dribble

🛠️ Service Notes

• Work clean: cap the fuel connections as they come off and clear the muck out of the injector recess before the injector is withdrawn, so nothing drops into the cylinder
• Clean the carbon off the seat in the head and out of the bore — a chip of carbon under an injector holds it off its seat and lets combustion gas past
• Renew the sealing washer, seal ring and O-rings supplied with the injector rather than reusing the old ones, and fit only the type of seal your engine's seat design uses
• Pull the clamp or holder down evenly to the torque given in the workshop manual for your engine; an over-tightened injector distorts and a slack one blows by
• Where the engine has electronically controlled injectors, the new injector's calibration code must be programmed into the control unit with Volvo Penta diagnostic equipment, then bleed the fuel system and leak-check before the boat goes back into service

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 20735598 - Related earlier/application injector reference

OEM / Related Numbers

• Related injector 20735598

Other-Brand OEM Numbers

• VOE21178216
• Bosch: 0 432 193 498

Aftermarket / Verified Equivalents

• Turbotech: replacement injector for OE 20735598 / 21178216

📦 Condition

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