Home / Lighting / Driving & light bars
John Guest
12mm 3/8" Straight Adapter Male Plastic
800-02038
A compact and reliable push-fit male straight adapter designed for clean transitions between 12mm tubing and 3/8" NPT threaded systems. The John Guest Male Adapter (800-02038) is built for caravan, 4WD, RV, and off-grid plumbing setups where secure, leak-free connections…
$13.50
Genuine John Guest male straight adapter designed for reliable connection between push-fit tubing and threaded plumbing systems.
Shipping & collection
*Shipping is calculated at checkout based on your location. Some products can't be delivered to every address.
A compact and reliable push-fit male straight adapter designed for clean transitions between 12mm tubing and 3/8" NPT threaded systems.
The John Guest Male Adapter (800-02038) is built for caravan, 4WD, RV, and off-grid plumbing setups where secure, leak-free connections are essential. It allows you to easily connect 12mm water line into threaded components such as pumps, filters, tanks, and manifolds.
Made from durable engineering-grade plastic, this fitting is lightweight, corrosion-resistant, and designed for long-term use in water systems. The push-fit design ensures fast installation with no tools required, making it ideal for both new builds and system upgrades.
- 12mm push-fit to 3/8" NPT male thread
- Quick tool-free installation
- Leak-resistant connection design
- Lightweight and corrosion-resistant plastic body
- Suitable for potable water systems
- Ideal for caravan & 4WD plumbing setups
