SKU: 51818577235

B58 BMW/Supra BMS Oil Catch Can Oil Filler Cap Dual Vent Connection Kit

Sale price$175.14 Regular price$194.60
Save 10%

Pay in installments of $48.65 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 17 - Jul 22

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

B58 BMW/Supra BMS Oil Catch Can Oil Filler Cap Dual Vent Connection KitUpgrade Your B58 Catch Can System with a True Dual Vent Solution For use with BMS Oil Catch Can for G Chassis Gen 2 B58 BMW M240 M340 M440 BMS Oil Catch Can for 2020+ B58 Toyota Supra GR MK5 BMS Oil Catch Can for G Chassis Gen 3 2025+ B58 BMW M340 M440 Take your B58 BMW or Supras crankcase ventilation performance to the next level with the BMS Oil Filler Cap Dual Vent Connection Kit = the missing link for ultimate catch can and engine efficiency. This


Upgrade Your B58 Catch Can System with a True Dual-Vent Solution

For use with 

BMS Oil Catch Can for G Chassis Gen 2 B58 BMW M240 M340 M440

BMS Oil Catch Can for 2020+ B58 Toyota Supra GR MK5

BMS Oil Catch Can for G Chassis Gen 3 2025+ B58 BMW M340 M440


Take your B58 BMW or Supra’s crankcase ventilation performance to the next level with the BMS Oil Filler Cap Dual Vent Connection Kit = the missing link for ultimate catch can and engine efficiency. 

This precision-machined billet cap replaces the factory oil filler cap and creates a second dedicated exit point for dirty PCV gases. That means both the crankcase vent and the valve cover breather can now be routed into your oil catch can. Twice the inputs into your catch can means twice the oil vapor capture, keeping harmful oil mist out of your intake tract. Cleaner air, cleaner intake valves, and a more efficient PCV system, more efficient engine, it’s a simple upgrade with major payoffs. 

Why This Matters:

  • Double the Captured Flow: Adds a second breather port for PCV/vapor extraction so you pull more blow-by gasses into your catch can.

  • Reduces Piston Resistance: This creates a slight negative pressure (vacuum) in the crankcase, reducing the resistance the pistons face as they move, improving fuel economy and performance.

  • Manages Pressure: "Blow-by" gases (unburned fuel, air, combustion byproducts) get past piston rings into the crankcase, creating pressure.

  • Cleaner Combustion Air: Reduces oil vapor recirculation that leads to intake valve carbon buildup. 

  • Maximized Catch Can Efficiency: Works with the BMS catch can to let it do more of its job. 

  • Perfect For: Anyone running a B58 BMS oil catch can looking to squeeze every bit of performance and protection from their PCV system, especially on tuned or high-boost builds.

  • Precision-Built Fit: CNC billet aluminum construction replaces the factory filler cap for a secure, purposeful connection. 

  • All Hardware Included: Includes billet cap, AN fittings, high-temp hose, T-fitting, and clamps for a clean install. 

What's Included:
(1) BMS B58 BMW Billet Oil Filler Breather Cap 
(1)
-12ORB 90º to -12AN fitting
(1)-12 AN barbed straight Fitting
(1) Heavy-duty custom silicone hose
(1) Barbed PCV T- fitting
(3) Hose clamps

⚠️ ATTENTION: This installs differently than the OEM oil filler cap. To install, line the grooves up with the tabs on the filler neck on the car, push all the way down and twist down tightly. Be sure they cap is seated and tightly sealed before use to prevent leaks. 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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
SKU: 51818577235

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 25 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
K
Verified Purchase
Kevin Sanguansukdikosol
Natrona Heights, US
★★★★★ 5
Brightness and quality
Color: 4*2.5in Cube LED Pod
Got this for my 2024 Crosstrek. Got this one specifically due to its functionality that I wanted, quality for the price and it looks great especially DRL. I leave the Amber cover on most of the time. If you want the DRL to be on while the car is on, you can do that but it has to be rewired which I did. Love the brightness. I’ve been having this on my Crosstrek for a few months now and have no issues.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 3, 2026
T
Verified Purchase
Thomas Chapman
Lexington, US
★★★★★ 5
Bright lights
Color: 4*2.5in Cube LED Pod
Installed these on my Bronco as ditch lights. Very bright light and I like that you can have them be white or put the cover on them for and amber light look. Took about 30 minutes to install and wire to the upfitter switches. They shoot a wide angle covering your blind spots on dark roads. I got these to replace a three inch ditch light. They're made from heavy duty metal and stand up to the extreme weather. I like them so much that I purchased the seven inch lights and install them on the front bumper. For what they cost it was a price that I couldn't pass up. I highly recommend these lights.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 17, 2026
A
Verified Purchase
Abraham Hazim
Houston, US
★★★★★ 5
Great product
Color: 4*2.5in Cube LED Pod, Color: 4*2.5in Cube LED Pod
Great lighting and beautiful design!!!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
A
Verified Purchase
Amazon Customer
Port Orchard, US
★★★★★ 5
Great lights
Color: 52Inch Lights +LED Pods+ Wiring Harness, Color: 52Inch Lights +LED Pods+ Wiring Harness
These lights are awesome. Ridiculously bright and cheap. I have nothing to compare them to but they're for being so inexpensive they are tremendously bright for being a first time installer. I cannot speak to their longevity and the moisture as I only put them on a week ago and went on trail. The whistling is definitely kind of a pain. I've tried the double sided tape people mention and it softened the whistle but when you get up to 70 mph it is obnoxiously loud I'll have to tweak it some more. If you're sensitive to loud squeezing sounds it definitely makes the ride a bit uncomfortable and I would look at other light installations instead of the 52 inch bar. If you can get past the squeeling noise or dampen the sound better than I did then you can't beat the functionality for the price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 4, 2025
D
Verified Purchase
Douglas hartman
Charlottesville, US
★★★★★ 5
Brighter then I expected
Color: 52Inch Lights +LED Pods+ Wiring Harness
Should have went with a curved but fit under front bumper of f150 and is brighter then I ever imagined
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026

recommand products