Description
Product Overview
The Allstar Performance 16 AN male to 1-1/4-12 in fitting is engineered for high‑flow water pump systems. Constructed from precision‑machined aluminum with a black anodized exterior, it offers superior corrosion resistance and a sleek appearance. The integrated O‑ring provides a secure, leak‑free connection, while the compact 4 × 7 × 1.9 in dimensions ensure easy routing in tight engine bays. Model ALL31139 complies with industry standards for AN thread specifications, delivering consistent performance in demanding automotive environments.
Usage
Designed for performance‑oriented vehicles, this fitting is perfect for aftermarket water pump upgrades, race‑car cooling loops, and high‑output street builds. Install it between the pump outlet and radiator or intercooler to maintain optimal coolant flow. Its lightweight design (4.3 oz) minimizes added mass, making it suitable for both street and track applications. 
Why Choose Us
Allstar Performance combines decades of engineering expertise with rigorous quality control. Each fitting undergoes CNC machining verification and anodizing inspection to guarantee dimensional accuracy and surface durability. The O‑ring is tested for chemical compatibility with common coolants, ensuring long‑term reliability. Backed by a no‑discontinue policy, this part remains available for future builds and maintenance cycles.
Key Features
- 16 AN male thread to 1-1/4-12 in female connection for versatile system integration
- Black anodized aluminum finish resists corrosion and UV exposure
- Integrated O‑ring provides a secure, leak‑free seal under high pressure
- Lightweight (4.3 oz) design reduces overall vehicle weight
- Precision CNC machining ensures exact thread tolerance and fit
FAQ
What coolant types are compatible with this fitting?
The O‑ring material is compatible with standard ethylene glycol, propylene glycol, and water‑based coolants commonly used in automotive applications.
Can this fitting be used on both front and rear water pumps?
Yes, the 16 AN male thread and 1-1/4-12 in female outlet make it suitable for a wide range of pump configurations, including front‑mount and rear‑mount setups.
Is any special tool required for installation?
A standard AN wrench or socket set is sufficient. Ensure the O‑ring is properly seated before tightening to achieve a leak‑free connection.
What is the warranty coverage?
Allstar Performance offers a one‑year limited warranty covering manufacturing defects and material failures.
How does the anodized finish affect heat dissipation?
The anodized layer is thin and does not significantly impede heat transfer, allowing the fitting to maintain efficient coolant flow while providing surface protection.
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