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BorgWarner Super Core EFR B1 6258

Marsoni M251S
Sale price$905.51
Pay 4 payments of $226.38 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
BorgWarner Super Core EFR B1 6258SKU: 179140 UPC: 840232700411 BorgWarner Super Core EFR B1 6258 Turbo Assembly The BorgWarner Super Core EFR B1 6258 is the core assembly for the EFR 6258 turbocharger featuring dual ball bearings compressor and turbine wheels without housings. Build your turbo for vehicles like Subaru WRX STI Mitsubishi Lancer Evolution and other 4 cylinder performance cars targeting 225 to 600 horsepower. Pair with EFR housings for quick spool broad powerband and
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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.
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4.8 ★★★★★
Based on 267 reviews
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Verified Purchase
Mark Liszkiewicz
Louisville, US
★★★★★ 5
nice quality
Size: 1.9" x 9.9" x 11.4"
I happen to be a fan of K&N air filters. Fit perfect in my vehicle. Seems like a much nicer quality filter than the cheapo filters from the parts store.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2026
G
Verified Purchase
gwpconcreteman
Lake Worth, US
★★★★★ 5
excellent product
Size: 1.9" x 9.9" x 11.4"
easy to install
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2026
L
Verified Purchase
Leyla Raymondo
Port Orchard, US
★★★★★ 5
Great purchase!
Size: 1.9" x 9.9" x 11.4"
This has worked out quite well. I have had it since 2023 and have been cleaned thru about 6 maintenance schedules. It's been 2 yrs and it's in great shape. Worth every penny.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 21, 2025
O
Verified Purchase
OldMan
Waukegan, US
★★★★★ 4
Really filters the cabin air
Size: 1.9" x 9.9" x 11.4"
K&N filters are always a cut above. Can’t say the same for service/support after the sale.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 31, 2026
R
Verified Purchase
Richard B
Boise, US
★★★★★ 5
quick and easy fit
Size: 1.9" x 9.9" x 11.4"
Instructions made it a very quick and easy fit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 17, 2026

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