S&S Cycle 4.320-inch Bore Multi-Layer Steel Head Gasket - Harley Milwaukee-Eight
About S&S Cycle
S&S Cycle has built American V-twin performance parts in Viola, Wisconsin since 1958 — flywheels, carburetors, cams, cylinder heads and complete crate engines. When a Harley owner talks about a 124, a 128 or a 131 build, they are usually talking about S&S. Few names carry more weight with engine builders in this space.
This S&S Cycle head gasket is designed for 2017 and newer Harley-Davidson Milwaukee-Eight (M8) engines with a 4.320-inch bore. Its multi-layer steel (MLS) construction is crucial for maintaining factory compression integrity and resisting heat in high-performance rebuilds and upgrades.
Why riders pick this
- Multi-layer steel (MLS) gasket construction
- Specifically for 4.320-inch bore M8 engines
- Maintains factory compression integrity
- Resistant to heat and chemical degradation
- U.S. manufactured for quality
When performing a rebuild or upgrading your Milwaukee-Eight engine, a precise and durable head gasket is paramount. This S&S Cycle MLS head gasket is specifically sized for M8 engines with a 4.320-inch bore, providing the reliable seal needed to maintain compression and handle the increased demands of a performance V-twin.
Reliable Sealing for Rebuilds
- Multi-layer steel (MLS) gasket construction
- Maintains factory compression integrity
- Resistant to heat and chemicals
- U.S. manufactured for consistent quality
- Designed for 4.320-inch bore Milwaukee-Eight engines
Essential for Performance M8 Builds
The multi-layer steel design of this S&S Cycle head gasket is ideal for high-performance applications, offering superior durability and sealing compared to traditional gaskets. It's a critical component for anyone undertaking a performance rebuild or upgrade on a compatible Milwaukee-Eight engine, ensuring that your power plant operates at its peak with confidence and longevity.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 900-1331
- Category: Air Intake Systems / Air Intake Components
- Weight: 0.12 lb
- Bore: 4.320"
Common questions
Will this head gasket fit any 2017+ Harley M8 engine?
This gasket is specific to M8 engines with a 4.320-inch bore. You must verify your engine's bore size before ordering, as it will not fit other bore dimensions.
Is this gasket suitable for high-performance engine rebuilds?
Yes, the multi-layer steel construction of this S&S Cycle head gasket is ideal for high-performance applications and engine rebuilds, as it helps maintain proper compression and sealing under demanding conditions.
Do I need any special tools for the installation of this gasket?
Standard gasket installation procedures apply. It is important to follow the correct torque specifications and installation sequence for your specific Milwaukee-Eight engine model to ensure a proper seal.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | S&S Cycle |
| TYPE | Air Intake Components |
| SKU | T14-852150 |
| WEIGHT | 0.12 lb |