Burger Motorsports BMS Oil Catch Can – BMW M240i / M340i / M440i (G42 / G20 / G21 / G22 / G23 / G26, Gen 2 B58)

OVERVIEW

Built for the second-generation B58 in G-chassis M240i, M340i and M440i models, this BMS catch can captures the oily vapor the crankcase ventilation system sends toward the intake. Keeping that residue out of the charge path helps limit carbon on the intake valves and keeps the turbo inlet cleaner on stock or tuned cars.

The can body is CNC-machined from billet aluminum with no welds and a black anodized finish, with three internal baffles and 16 mm+ fittings sized above the OEM PCV passages. A billet bracket, 90° PCV adapter and silicone hoses come in the kit, the factory closed-loop PCV operation is preserved, and installation takes around 20 minutes and is fully reversible. This version is for cars already running a BMS or other aftermarket intake.

SPECS

• Can height with lid: 4.4 in (111 mm)
• Can diameter: 2.5 in (63.7 mm)
• Lid length (back to nozzle end): 4 in (101 mm)
• Nozzle OD: 0.75 in (19.2 mm)
• Nozzle ID: 0.669 in (17 mm)
• Fluid capacity: up to 5.5 fl oz (162.6 mL)
• Inlet/outlet size: 16 mm+ (larger than OEM PCV passages)
• Material: CNC-machined billet aluminum, black anodized, no welds
• Separation: triple-baffle internal design
• PCV: retains the factory closed-loop PCV system (no venting to atmosphere)
• Drain: unscrew the base or use the 1/8" NPT drain plug; empty every 3–6 months
• Made in the USA; lifetime guarantee from Burger Motorsports
• Install time: approx. 20 minutes, fully reversible
• Mounting: billet B58 bracket with 90° 19 mm PCV adapter
• Optional transparent can base lets you see fluid level at a glance; Burger advises against it where temperatures regularly reach 32°F (0°C) or lower.

PARTS INCLUDED

• (1) BMS G-chassis B58 oil catch can (choice of billet aluminum or transparent base)
• (1) Billet B58 mounting bracket
• (1) Billet B58 90° 19 mm nipple-to-PCV bracket adapter
• (1) Heavy-duty formed silicone inlet hose
• (1) Heavy-duty 3" straight silicone outlet hose
• (2) M5 x 0.8 x 12 mm internal-hex bracket-to-can screws

TECH RESOURCES

Additional Parts Required

• Required ("Catch can only" kit, one of): BMS B58 G20 Billet Intake, BMS M340i B58 Competition Intake, or another aftermarket intake. Contact Speed Logic to order.
• Factory-intake cars: choose the "Catch can + BMS intake muffler delete" kit option on this listing; the muffler delete is included.
• Optional: BMS B58 Oil Catch Can Oil Filler Cap Connection Kit (adds a second PCV inlet from the oil filler cap).
• Optional: BMS Clear View transparent oil catch can base (also selectable as a can base option on this listing).
• Not required (shown in photos only): BMS billet strut cross braces for G20 M340i.

Installation

• BMS G-Chassis B58 Oil Catch Can Installation Guide (PDF)
• BMS G20 M340i B58 Oil Catch Can Video

VEHICLE APPLICATIONS

Gen 2 B58 only. Requires a BMS B58 Billet Intake, BMS B58 Competition Intake or other aftermarket intake. The G21 Touring was not sold in the US.