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Ships within 48 hours · Estimated delivery Jul 4 - Jul 9
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Description
Boundary 89-05 Ford/Mazda BP (All Types) I4 Shim Kit (7/14/21/28/35 PSI) w/Retaining PinEnhance the performance of your 1989 to 2005 Ford and Mazda BP series inline 4 engines with the Boundary BOU Shim Kit. Precisely engineered for all BP types, this kit includes shims rated at 7, 14, 21, 28, and 35 PSI, offering you the flexibility to fine tune your engine oil pump pressure to match your specific tuning needs. Designed for ease of installation and durability, the kit also comes with a retaining pin to ensure a secure fitment during
Enhance the performance of your 1989 to 2005 Ford and Mazda BP series inline 4 engines with the Boundary BOU Shim Kit. Precisely engineered for all BP types, this kit includes shims rated at 7, 14, 21, 28, and 35 PSI, offering you the flexibility to fine-tune your engine oil pump pressure to match your specific tuning needs.Designed for ease of installation and durability, the kit also comes with a retaining pin to ensure a secure fitment during operation. Manufactured by Boundary, a trusted name in engine components, this shim kit guarantees high quality and reliable performance.
Whether you are restoring a classic or boosting your car's engine efficiency, this kit provides the essential components to optimize oil pressure for better engine longevity and power. Don't compromise your engine's health—choose this specialized shim kit to maintain optimal oil flow and pressure.
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
- If time is of the essence, please consider selecting expedited delivery for faster service.
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]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 1438 reviews
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Product Reviews
★★★★★ 5
Works for foot psoraisis
Size: 2 pairs black L
Got these for work (service industry) to reduce issues with psoriasis and blisters while putting on 20k+ steps a day. Over time the wounds healed and I could work without so much pain. I now don't use them all the time like I used to, only when a new lesion or blister appears, too prevent a breakout. Tip: if you're not in full breakout, wear thick socks under these as a barrier to friction.
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Reviewed in the United States on April 28, 2026
★★★★★ 4
Work well but run small
Size: 1 pair black L
They do seem to run a bit small. I bought them for my bf but snagged them from him because I couldn’t resist! I’m about a W8/12 and they were just a little big but unlike others, I just put them on while sleeping and didn’t walk around with them. If you’re just planning on that, they did a great job at sloughing and moisturizing 😎
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Reviewed in the United States on April 25, 2026
★★★★★ 5
Good socks they work.
Size: 2 pairs black L
I normally wear size 13&half to 14 men's, and these fit me ok. They sit just below the ankle. They can get a little tight for me so you should look out for that if you are on the thicker side. But they work as advertised and help moisturize your feet. I recommend wearing them if you're going to just be hanging around home for a bit in one spot as they can be a little slippery to walk in if you go fast. Would not recommend going up and down stairs.
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Reviewed in the United States on August 28, 2025
★★★★★ 5
Good socks
Size: 1 pair black L
Good socks
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Reviewed in the United States on May 6, 2026
★★★★★ 3
REALLY unsafe to walk around in these
Size: 2 pairs black L
They do what they are expected to do, but should only be used if you are stationary. The gel base makes for very unstable footing if walking around
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Reviewed in the United States on May 27, 2026
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