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13B-REW AST Bypass
120,00 €
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Upgrade your 13b-REW cooling system effortlessly with our innovative Coolant AST bypass, designed to replace your outdated AST and seamlessly integrate a bigger coolant reservoir, preventing your engine from running out of coolant. Crafted with precision using advanced 3D Printing technology in aerospace-grade Aluminum, this housing guarantees durability and reliability.
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- Free worldwide shipping on all orders over $100
- Delivers in: 3-7 Working Days Shipping & Return
Upgrade your 13B-REW rotary engine’s cooling system with our precision-engineered AST bypass. This component is designed to replace the factory air separation tank (AST), allowing for the installation of a larger external coolant reservoir. The result: improved cooling efficiency and reduced risk of coolant starvation during hard driving.
Each unit is 3D printed in aerospace-grade aluminum, combining the benefits of modern additive manufacturing with the strength and reliability required for high-performance engines.
Specifications
| Feature | Details |
|---|---|
| Material | 3D-printed   aluminum |
| Neck Diameter | 34 mm |
| Hose Barb | 37 mm (at thickest point) |
| Production Time | ~3 weeks (made to order) |
| Fitment | Mazda 13B-REW (AST replacement) |
| Design | Compatible with external coolant reservoirs |
Customization
If your setup requires a different neck or barb size, we can accommodate custom dimensions.
Please contact us prior to purchase to discuss your requirements.
Production & Shipping
All housings are made to order using industrial-grade metal additive manufacturing. Please allow approximately 3 weeks for production before shipping.
This is not just an upgrade—it’s a long-term solution for rotary owners seeking performance, reliability, and modern fabrication quality.
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