Description
Overview:
This Cover / Breather is a Genuine Honda part for the GX630 family of V‐twin petrol engines. It forms the outer housing of the crankcase ventilation path, helping to control internal pressure and vent blow‐by gases safely. Built from OEM‐grade, oil‐ and heat‐resistant materials, it is designed to withstand continuous engine temperatures and vibration. Correct crankcase breathing supports stable running, reduces the risk of oil carry‐over, and helps protect internal components. The part is a direct replacement for worn or damaged units on engines used across construction, groundcare and industrial equipment. It fits the Honda GX630 and wider GX series variants used on generators, pumps, compressors, ride‐on mowers and other machinery where reliable engine ventilation is essential. Genuine status: Genuine Part.
Key Features:
- Genuine Honda OEM part for precise fit and factory-grade reliability
- Direct replacement for the breather cover on GX630-series V‐twin engines (no modifications required)
- Restores correct crankcase ventilation and pressure balance for consistent performance
- Durable, oil‐ and heat‐resistant construction for long service in harsh site and outdoor conditions
- Helps reduce oil mist escape and contamination, supporting cleaner operation
- Supports stable idle and throttle response by maintaining proper engine breathing
- Straightforward installation with standard hand tools; seals cleanly against mating surfaces
- Clearly identified Honda part, MPN: 12356-Z6L-000, for easy ordering and stock control
Typical Applications:
Used on Honda GX V‐twin engines powering site generators, water pumps, pressure washers, compressors, welders, ride‐on and out‐front mowers, chippers and other plant. Suited to construction, landscaping, agriculture, facilities maintenance and hire fleets where dependable crankcase ventilation helps maintain engine health.
Also known as:
Crankcase vent cover, PCV breather cap, engine ventilation cover, crankcase ventilation cap, breather housing, crankcase cover (breather).
Fits Models:
GX630, GX630R, GX630RH, GX660R, GX660RH, GX690H, GX690R, GX690RH, GXV630R, GXV630RH, GXV660R
Product Specifications
| L&S Part No. | 12356 Z6L 000 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Honda |
| OEM No. | 12356Z6L000 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | Honda |
| Key Features | - Genuine Honda OEM part for GX630-series V-twin engines - Direct replacement, no modifications needed - Oil- and heat-resistant for harsh conditions - Restores crankcase ventilation and pressure balance - Fits GX630, GX660, GX690, GXV630, GXV660 models |
| Fits Models | GX630 (GDABK) | GX630RH (GCAMH) | GX630R (GCBEK) | GX660RH (GCANH) | GX660R (GCBFK) | GX690RH (GCAPH) | GX690R (GCBGK) | GX690H (GDACH) | GXV630RH (GJACH) | GXV630R (GJANK) | GXV660R (GJAPK) |
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