N54 BOV LINE UPGRADE

The ARM N54 BOV Line Upgrade helps your blow-off valve open and close fully and quickly. It replaces the standard 1/8" vacuum line with a 1/4" line — doubling the size to deliver ample pressure and ensure proper BOV function. A smaller 1/8" line can cause surging or over-boosting if the BOV doesn't activate properly.

Highlights

• Runs a 1/4" vacuum line from the MAP sensor to the BOV.
• Prevents surging and over-boosting.
• Ensures proper BOV function.
• Simple 30-minute installation.

Construction

The intake-manifold adapter is milled from one piece of aluminum to eliminate leak points. The 1/4" hose is high-temperature polyurethane to withstand engine heat, and the 90-degree fittings come with Teflon tape pre-installed for a tight, leak-free seal.

Fitment (N54 3.0L)

BMW E82 1M Coupe & 135i, E88 135i, E89 Z4, E90 335i & 335xi, E92 335i / 335is / 335xi, E93 335i & 335is, E60 535i.

What's included: ARM BOV line adapter, mounting screws, 1/4" vacuum line, 90-degree fittings, OEM manifold cap.

Backed by ARM Motorsports' lifetime warranty against defects in craftsmanship and fitment.

Ships from our Vancouver shop — KORE SPEED is proudly Canadian-owned, with no surprise cross-border duties for Canadian buyers. Questions on fitment? Email support@korespeed.com.