Best in 7 days
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Ships within 48 hours · Estimated delivery Jun 13 - Jun 18
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Description
QA1 CR-S Tapered High Travel Coil Spring - 4.125" ID, 300 lbs/in Rate, 11" Length - 1971-1987 Pontiac BonnevilleThese silver powder coated springs on your 1971 1987 Pontiac Bonneville fit perfectly with QA1's Pro Coil Shock Systems. These springs are available with flat and pigtail ends and in 10" and 11" free lengths. Made with the highest quality materials, QA1'springs are strong, consistent and have a long life. All QA1'springs are manufactured using the highest quality materials for high strength, consistency and long life. They are cold wound, heat treated
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.8 ★★★★★
Based on 2100 reviews
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Product Reviews
★★★★★ 5
Perfect
Color: 20pcs
Excellent value and a perfect replacement for the OEM clips. Nice secure hold.
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Reviewed in the United States on December 22, 2025
★★★★★ 5
Noticeable Improvement in Engine Smoothness
Size: 150 ml, Pack of 1
I decided to try LIQUI MOLY Valve Clean to help keep the intake valves clean and maintain engine performance, and I’m really impressed with the results. After adding it to the fuel tank and running through a full tank of gas, the engine felt noticeably smoother and more responsive.
It’s very easy to use—just pour it into the fuel tank as directed. I also like that it’s from LIQUI MOLY, a brand known for high-quality automotive additives.
While it’s not a miracle fix for serious mechanical issues, it’s a great preventative maintenance product to help reduce deposits and keep the engine running efficiently. I plan to use it periodically as part of my regular maintenance routine.
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Reviewed in the United States on March 7, 2026
★★★★★ 5
Must have.
Size: 150 ml, Pack of 1
Very good product, works great.
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Reviewed in the United States on May 7, 2026
★★★★★ 5
Good for routine engine care
Size: 150 ml, Pack of 1
Definitely not a cure-all for major mechanical problems, but it works well as a preventative step. It helps lessen deposits and keeps the engine running smoothly. I intend to use it regularly as part of my maintenance schedule to keep everything in good shape.
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Worth the money
Size: 150 ml, Pack of 1
Great line of car products. My BMW gets better gas mileage when I use it regularly.
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Reviewed in the United States on April 1, 2026
