Piston Ring Kit – Fits Volvo 240, 260 Series B21 Engines (Replaces 275337, 275315)
Piston Ring Kit – Fits Volvo 240, 260 Series B21 Engines (Replaces 275337, 275315) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Piston Ring Kit – Fits Volvo 240, 260 Series B21 Engines (Replaces ...
Product Details
This is a standard size Piston Ring Kit for Volvo 240, 260 Series B21 Engines, suitable for models manufactured between 1975 and 1985. It is specifically designed for B21A, B21E, and B21F engine variants. Please note that this kit is not compatible with turbo engines such as the B21ET and B21FT.
This kit is a direct replacement for Volvo OEM part numbers 275337 and 275315.
- Designed for all 4 cylinders of the B21 engine.
- Classified as a Genuine Classic Part by Volvo, ensuring authentic fitment.
- Engineered for non-turbo applications only.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Superseded By |
|---|---|---|
| Volvo | 275315 | 275337 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This piston ring kit is designed for select Volvo 240 and 260 models equipped with the B21 engine. Verify your engine serial number against the notes provided to ensure an exact match.
| Brand | Model | Engine | Cylinders | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Volvo | 240 | B21A | 4 | 1975–1985 | 275337/275315 | Engine serial 498754-498767, 498794 |
| Volvo | 240 | B21E | 4 | 1975–1985 | 275337/275315 | Engine serial 498772 (up to 2991), 498773 (up to 4662), 498774 (up to 5426), 498775 (up to 289) |
| Volvo | 240 | B21F | 4 | 1975–1985 | 275337/275315 | Engine serial 498778-498783, 498788, 498780, 498960 |
| Volvo | 260 | B21A | 4 | 1975–1985 | 275337/275315 | Engine serial 498754-498767, 498794 |
| Volvo | 260 | B21E | 4 | 1975–1985 | 275337/275315 | Engine serial 498772 (up to 2991), 498773 (up to 4662), 498774 (up to 5426), 498775 (up to 289) |
| Volvo | 260 | B21F | 4 | 1975–1985 | 275337/275315 | Engine serial 498778-498783, 498788, 498780, 498960 |
Technical Specs
- Product Type
- Piston Ring Kit
- Engine Application
- B21 Series
- Fitment Type
- Standard Size
- Number of Cylinders
- 4
- Dimensions
- 12.7cm x 12.7cm x 1.5cm (L x W x H)
- Installation Notes
- For B21A, B21E, B21F engines; excludes turbo variants (B21ET, B21FT)
- Other Technical Attributes
- Classified as a Genuine Classic Part by Volvo
What’s in the Box
- 1 x Piston Ring Set (for 4 cylinders)
Installation Notes
- Verify the piston ring kit matches the required specifications for your engine before starting.
- Carefully remove the old piston rings using a ring expander tool.
- Thoroughly clean the piston, paying special attention to the ring grooves to remove all carbon deposits.
- Install the new piston rings, starting with the oil control ring and then the compression rings, ensuring they are oriented correctly.
- Stagger the ring end gaps according to the manufacturer's service manual to prevent compression loss.
- Generously lubricate the pistons, rings, and cylinder walls with fresh engine oil before installation.
- Use a piston ring compressor to carefully guide the piston and ring assembly back into the cylinder bore.
- Always follow the torque specifications outlined in your service manual when reassembling engine components.
Troubleshooting & FAQ
Which specific Volvo engines does this kit fit?
This kit fits standard size, naturally aspirated Volvo B21 series engines (B21A, B21E, B21F) from 1975 to 1985. It is NOT suitable for turbocharged variants like the B21ET or B21FT.
Is this a kit for a single piston or the entire engine?
This is a complete piston ring kit for all four cylinders of a compatible B21 engine.
How do I know if my engine needs standard size rings?
This kit is intended for engines with a standard cylinder bore that has not been machined oversized. If your engine block has been previously rebuilt and bored out, you will need corresponding oversized rings. Always measure the cylinder bore diameter before ordering to ensure correct fitment.
What are the common symptoms of worn piston rings?
Key indicators of failing piston rings include excessive blue or grey smoke from the exhaust (a sign of oil burning), a noticeable increase in oil consumption between changes, poor engine performance, and low compression test readings.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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