21397310 Spring | Genuine Volvo Penta Part

🔧 Product Description

Precision coil spring used within the clutch and bearing-housing assembly of the Volvo Penta IPS2-A drive. It applies the specified preload or return force within the clutch mechanism and must be installed in the correct position with the matching piston, disc and bearing components.

🚤 Compatibility

Typically suits:

• Volvo Penta D11A-C MP
• Volvo Penta IPS2-A

• Engine Family: D, IPS

⚙️ Key Features

• Genuine Volvo Penta IPS2-A internal clutch spring
• Designed for the IPS2-A bearing-housing assembly
• Provides calibrated preload / return force
• Used with the specified clutch discs, piston and hub components
• Internal transmission component requiring clean, measured assembly
• Engine type: Volvo Penta IPS marine propulsion drive
• 32 used per assembly

🔌 Function

Provides the designed spring force within the clutch mechanism so the piston and friction-disc stack engage, release or return correctly.

⚠️ Common Signs of Failure

• Loss of free length or spring tension
• Cracked or broken spring coils
• Delayed, harsh or incomplete clutch engagement
• Metal debris or abnormal wear found during drive overhaul
• Incorrect clutch clearance after reassembly

🛠️ 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

• 21177270 - companion spring used in the same clutch assembly
• 21298370 - associated disc spring
• 21376960 - associated disc kit
• 3817660 - associated disc kit
• 3818911 - associated bearing housing
• 3817684 - associated cylinder
• 21482105 - configuration-specific piston references
• 22906676 - configuration-specific piston references
• 3817680 - configuration-specific hub references
• 22933883 - configuration-specific hub references

📦 Condition

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