★★★★★ 5
Work’s okay
They work ok, as expected
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 26, 2025
CSF High Performance Oil Cooler - E30 / E24 / E31 (OEM and -10AN Fittings)
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
CSF High Performance Oil Cooler - E30 / E24 / E31 (OEM and -10AN Fittings)Direct fit oil cooler for E30 Also can fit other M20 engine swap set ups Comes complete with fitting kit for both OEM style as well as 10 AN male connections High performance bar plate design for maximum durability and performance Cast end tank design Developed along with leading BMW restoration R&D partner CA Tuned Fits: E30 w M20 E28 w M20 E34 w M20 E24 w M20 E31 850CSi
Quick Dispatch:
Your CSF High Performance Oil Cooler - E30 / E24 / E31 (OEM and -10AN Fittings) orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your CSF High Performance Oil Cooler - E30 / E24 / E31 (OEM and -10AN Fittings) ships.
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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]
- Please click here for more details>>> Return & Exchange Policy
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4.6 ★★★★★
Based on 1315 reviews
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Product Reviews
★★★★★ 5
Just as good as OEM
Exactly what I expected...
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Reviewed in the United States on August 9, 2025
★★★★★ 5
Fit perfectly
Truly impressive, bought these and a set from a us boat supplier a thermostat made in the USA . They came with the gasket separate . I could not figure out how to put it together . I used these in my mercury optimax 135 hp . They fit perfectly and appear to be working great at a quarter the cost .
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Reviewed in the United States on August 29, 2024
★★★★★ 5
Handles the power
Size: 5FT, Style: 8AWG
Used for leads to handle high Amperage. Replaced cheesy 12 gauge leads that came with
the unit
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Reviewed in the United States on January 28, 2026
★★★★★ 5
Good stuff!
Size: 5FT, Style: 8AWG
Good quality silicone insulated wire. It’s very flexible and solders really well. The silicone insulation can’t be beat for heat resistance. I will definitely purchase again.
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Reviewed in the United States on January 12, 2026
