21112631 Spring | Genuine Volvo Penta Part

🔧 Product Description

Brand-new genuine Volvo Penta compression spring used inside the mechanical fuel injectors on the TAMD165C-A. Four springs are shown in the applicable injector-component catalogue, one for each injector assembly, and each spring establishes the nozzle-opening preload.

🚤 Compatibility

Typically suits:

• Volvo Penta TAMD165A
• Volvo Penta TAMD165C

• Engine Family: TAMD

⚙️ Key Features

• Injector nozzle compression spring
• Four used across the TAMD165C-A engine set
• Controls injector opening pressure
• One spring supplied; injector nozzle and shims are separate
• Engine type: Volvo Penta TAMD165C-A four-cylinder marine diesel

🔌 Function

Applies the calibrated closing force to the injector needle so the nozzle opens at the specified fuel pressure and closes cleanly after injection.

⚠️ Common Signs of Failure

• Incorrect injector opening pressure
• Nozzle dribble or poor atomisation
• Diesel knock, smoke or rough running
• Spring fatigue, corrosion or breakage
• Uneven cylinder exhaust temperatures

🛠️ Service Notes

• Compare the new spring with the old for free length, wire diameter and number of coils before fitting; springs that look alike often have different rates
• Never stretch, shim or cut a spring to change its behaviour, and never refit one that has taken a set, is pitted, or shows a bright rubbed patch from coil clash
• Where springs work as a set, renew the whole set together so the loading stays even
• Fit the spring the way it came out where the ends or the coil pitch differ from one end to the other, and make sure it seats fully in its locating step or pocket
• Keep the spring and its seat clean and check for corrosion — a corroded spring in a fuel or engine assembly is a broken spring waiting to happen

🔄 Supersession & Cross Reference

OEM / Related Numbers

• Magirus-Deutz 01319219 / 1319219

Other-Brand OEM Numbers

• VOE21112631
• Bosch 2 434 614 041 / 2434614041
• Lucas LDFG0345

📦 Condition

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