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21136656 Piston & Ring for Volvo FH12 D12C

7000 801 100

Summary

This compressor piston and ring set is designed for Volvo FH12 D12C engines. Featuring an 80.00mm diameter, these high-strength components ensure reliable performance within the air brake compressor system for heavy commercial vehicles. Equivalent to OE Volvo 21136656.

Product identifiers
EAN Code8699031018126
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Compatible OEM Codes

  • VOLVO
    • 21136656
  • RENAULT TRUCKS
    • 7421136656
  • KNORR-BREMSE
    • SEB22517

Description

What does a compressor piston and ring do?

This compressor piston and ring set plays a critical role in the compression cycle of the air brake compressor, ensuring efficient air pressure generation for the braking system. These components are manufactured from high-strength materials designed to withstand the intense heat and pressure cycles typical of heavy commercial vehicle applications.

Compatible vehicles and engines

This specific set is compatible with Volvo FH12 trucks equipped with D12C engines. It is engineered to meet the strict requirements of the original equipment, ensuring correct ring groove arrangement and fitment within the cylinder liner.

Installation and maintenance

When performing an overhaul, technicians should verify that the 80.00mm diameter matches the current cylinder bore exactly. It is essential to inspect the ring grooves for wear and ensure that the new rings provide the correct end-gap clearance as specified in the service manual to prevent blow-by or binding.

Troubleshooting and selection

Proper maintenance of the compressor assembly includes checking these components during regular service intervals to prevent air leaks or loss of pressure in the pneumatic system.

OE cross-reference

7000 801 100 (Compressor Piston & Ring) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21136656.

Other OEMs

KNORR-BREMSE

  • SEB22517

RENAULT TRUCKS

  • 7421136656

VOLVO

  • 21136656

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DEUTZ
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FORD
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FORD Cargo 3232 Ecotorq 7.3 / 9.0 (Euro 5)
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PERKINS
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RENAULT TRUCKS Premium DXi11
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VOLVO
VOLVO A30G kaya kamyonu D11
VOLVO A40G kaya kamyonu D16
VOLVO B11R D11A
VOLVO B13R D13B
VOLVO EC380D / EC480D ekskavator D13
VOLVO FH12 D12C
VOLVO FH12 D12D
VOLVO FH13 D13A
VOLVO FH13 D13B
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VOLVO L150H / L250H yukleyici D13
VOLVO NH12 D12C
VOLVO TAD1341-1345VE D13
VOLVO VHD D12
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VOLVO VNL D12
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YUTONG ZK6118 ISBe
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YUTONG ZK6125 ISLe
ZHONGTONG LCK6118 ISBe
ZHONGTONG LCK6118 ISLe

FAQ

How do I verify compatibility with my compressor?
Check that the piston diameter matches your cylinder bore exactly (80.00mm in this case) and verify that the ring groove configuration matches the original component.
What is the purpose of the ring grooves?
The upper grooves are designed to carry compression rings to maintain seal, while the lower groove typically holds an oil control ring to manage lubrication.
Can I use a standard size if my liner has been machined?
No, if a liner has been rebored or honed, an oversize piston and ring set must be used instead of this standard 80.00mm version.
What are common symptoms of worn piston rings?
Common signs include a gradual loss of air pressure in the braking system or visible oil leakage from the compressor breather.
What are the OE reference numbers of this part?
7000 801 100 directly replaces Volvo OE number 21136656.