CSF BMW B58/B48 Front Mount Triple-Pass Heat Exchanger w/Rock Guard - Black

On the F-chassis B58, charge air is cooled by a water circuit, and the front heat exchanger is where that water gives up its heat. CSF's unit replaces the thin single-row factory core with a much deeper two-row core and routes the coolant through it three times. The goal is lower water temperature going back to the charge cooler, which helps keep intake temperatures and limp mode in check on tuned cars.

What you get

• Two-row core, 68 mm deep, using CSF's B-Tube design, against the 27 mm single-row factory core.
• Triple-pass flow, with coolant crossing the core three times before it leaves.
• 6.5 mm multi-louvered fins.
• CNC-machined mounting pins, brackets and quick-connect fittings in the factory style, with no modifications needed.
• Detachable rock guard and a black finish.

Brand: CSF · Part #: 8131B

Ships from the brand or distributor, usually in 3-7 business days.

• Ships from the brand or distributor, usually in 3–7 business days.
• Shipping is charged at the carrier's rate, shown at checkout. Orders over 70 lb ship by freight for a flat $99.
• Unused parts can be returned within 30 days. Some items are marked no-refund in their description.

Full details are on our shipping and returns page.