Honda B-Series Block port and Plug Conversion Options

Looking to add a breather/oil catch can to your b-series block. We have a few options available to suite whatever your need.

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B-Series Block Port Fittings screw 

These fittings screw into the back of the b-series block allowing you to hook up a catch can.

Note: The early b18a blocks 1990-1992 only have 1 block port fitting location. Please check your block before ordering.

Here is a B Series Block with some of the available ports to utilize these fittings.

B-Series -10AN Block Plug Adapter 

These fittings will work for any b-series motor which has the black box on the back of the block. It just gives you another port to hook up a catch can. This fitting will come in real handy to those who only want to use one port on the back of the block. You don’t have to take off the stock 28mm plug on the back of the block, which can be tough if the motor is still in the car.

Note: B20 blocks don’t have this port.

The B/D Series Front Block Port Adapter

These fittings are made from billet steel. It features a 28mm to AN 6 that fits the front of your b-series and d-series engines and allows you to run AN fittings an line for coolant to your turbo.

Just remove the stock plug and replace with this adapter which converts the port to a AN 6 coolant feed for your turbo.