Skip to product information
SKU:
ZZ3H00352
Same day shipping if ordered by 4PM CST.
Block Plug Breather Fittings B16 B18c B-Series Catch Can M28 To 10AN For Honda
$33.99
In Stock
$33.99
Sale price
$33.99
Regular price
Thread Size
Estimated delivery between
Let Northline Parts Do the Heavy Lifting for You!
Not sure which part you need? Our team can help you find the right replacement.
Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT
Live Chat: Available 24/7
I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks
Edward H. — Verified customer
Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
Block Plug Breather Fittings M28 to 10AN for Honda B-Series
These block plug breather fittings convert the M28 port on Honda B16 and B18C B-series engines to a 10AN fitting, allowing for a clean and efficient catch can connection.
Overview
These block plug breather fittings are designed for Honda B-series engines, specifically B16 and B18C models, to replace the factory PCV or breather port. They provide a secure M28 to 10AN adapter, enabling direct routing of crankcase gases to an external catch can. This setup helps reduce oil buildup in the intake and keeps the engine bay looking organized.
Built For Performance
- M28 thread side fits directly into the engine block breather port.
- 10AN female end accepts standard -10AN fittings and hoses.
- Aluminum construction for lightweight durability and corrosion resistance.
- Designed to clear common intake manifolds and turbo piping.
- Provides a positive seal to prevent vacuum leaks.
Fits These Machines
- for Honda B16A
- for Honda B16B
- for Honda B18C (including B18C1, B18C5, B18C6)
On-The-Job Use
- Commonly used on modified Honda engines with aftermarket catch cans.
- Ideal for track day and performance street builds.
- Facilitates oil-air separation during high RPM driving.
Specs At A Glance
| Thread Size | M28 x 1.5 |
| Fitting Size | 10AN Female |
| Compatible Engine | Honda B16, B18C |
| Part Number(s) | M28 to 10AN |
Good To Know
Q: Will this block plug breather fitting fit my stock Honda B18C1? A: Yes, this fitting is designed to replace the factory breather plug on B18C1 and other B-series engines with an M28 thread port. Always confirm your block's port size before ordering.
Q: What hose size should I use with this 10AN fitting? A: Use a -10AN (or 5/8" ID) hose to connect from the 10AN female end to your catch can inlet. This size is common for crankcase ventilation setups.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.