Goopy Performance 13B Water Seal & Gasket Set – RX-7 / RX-8
Goopy Performance 13B Water Seal & O-Ring Gasket Set
Goopy Performance gasket and sealing set for compatible Mazda 13B rotary engines, designed for use during engine rebuilding and reassembly.
The water seals and O-rings are critical components of the rotary engine sealing system, helping maintain correct separation and sealing of the engine's coolant, oil and combustion-related systems.
KEY FEATURES
- Genuine Goopy Performance product
- Designed for compatible Mazda 13B rotary engines
- Complete engine sealing solution according to selected kit specification
- Suitable for RX-7 and RX-8 rotary engine rebuilds
- Suitable for standard and performance engine builds
APPLICATION
Suitable for compatible Mazda 13B and 20B rotary engine applications, including applicable:
- Mazda RX-7
- 13B naturally aspirated engines
- 13B turbo engines
- 13B-T
- 13B-REW
- 20B-REW
- Street engine rebuilds
- Performance engine rebuilds
- Motorsport rotary engines
ROTARY ENGINE WATER SEALS
Water seals are critical to the Mazda rotary engine's coolant sealing system.
During an engine rebuild, all water seals should be replaced and the corresponding grooves and sealing surfaces carefully inspected and cleaned before assembly.
ENGINE REBUILD INFORMATION
When rebuilding a Mazda 13B rotary engine, RSG recommends inspecting the complete engine rather than replacing sealing components in isolation.
Components to inspect include:
- Rotor housings
- Side and intermediate housings
- Water-seal grooves
- Apex seals
- Apex seal springs
- Side seals and springs
- Corner seals and springs
- Oil-control rings and O-rings
- Front and rear main seals
- Rotor bearings
- Stationary bearings
- Oil pump and oil pump drive components
- Eccentric shaft
COMPLETE YOUR 13B REBUILD
Combine the Goopy Performance gasket set with your preferred internal engine components to create a complete rebuild package.
RSG supplies a range of Mazda rotary engine components including:
- Goopy Performance apex seals
- RA Super Seals
- TCP Magic apex seals
- Mazda OEM sealing components
- Rotor bearings
- Stationary bearings
- Oil-system components
- Complete 13B engine rebuild kits
RSG ROTARY ENGINE SUPPORT
Rotary Secret Garage builds and supplies components for Mazda rotary engines ranging from standard street applications to high-performance turbocharged builds.
If you are unsure whether this Goopy gasket set is correct for your particular 13B engine, contact RSG with your vehicle, engine type and engine configuration before ordering.
Worldwide shipping available.

