Description
Product Overview
Podavelle’s AN6 to 1/4 NPSM aluminum adapter is engineered for precision and durability. Crafted from aerospace‑grade 6061‑T6 aluminum, the fitting features straight NPSM threads that replace OEM tapered adapters, eliminating the risk of case cracking. Anodized for enhanced corrosion resistance, each piece measures 1.8 x 1.2 x 0.6 inches and weighs just 0.02 kg, making it both lightweight and robust. The package includes two adapters, each with sealing washers for a leak‑free installation.
Usage
Designed for automatic transmissions such as TH350, TH400, 700R4, 4L60E, 200‑4R, TR6060, AOD, 4R100, 4R70W, and C5, this adapter fits any application that utilizes a 1/4″ NPSM thread. Ideal for performance upgrades, rebuilds, or routine maintenance, it allows mechanics and DIY enthusiasts to connect braided fuel lines directly to the transmission case without compromising structural integrity. 
Why Choose Us
Podavelle combines engineering expertise with rigorous quality control. Each adapter undergoes CNC machining for exact tolerances, followed by an anodized coating that resists wear and chemical exposure. Compatibility with both gasoline and alcohol‑based fuels ensures versatility across a wide range of vehicles. Backed by a 4.6‑star rating from over 100 verified customers, the product delivers reliable performance in demanding automotive environments.
Key Features
- Precision‑machined 6061‑T6 aluminum for lightweight strength
- Straight NPSM threads prevent case cracking during installation
- Anodized finish provides superior corrosion resistance
- Includes sealing washers for a leak‑free connection
- Fully compatible with gasoline and alcohol‑based fuels
FAQ
What transmissions are compatible with this adapter?
The adapter fits any transmission that uses a 1/4″ NPSM thread, including TH350, TH400, 700R4, 4L60E, 200‑4R, TR6060, AOD, 4R100, 4R70W, and C5.
Do I need additional tools for installation?
Standard hand tools such as a torque wrench and thread sealant are sufficient. The straight thread design simplifies the process compared to tapered OEM adapters.
Is this adapter suitable for high‑performance or racing applications?
Yes. The lightweight aluminum construction and corrosion‑resistant finish make it ideal for both street and performance use, handling the stresses of high‑output transmissions.
Can I use this adapter with alcohol‑based fuels?
Absolutely. All Podavelle fittings are tested for compatibility with gasoline and alcohol‑based fuels, ensuring reliable operation in diverse fuel systems.
What is included in the package?
Each package contains two AN6 to 1/4 NPSM aluminum adapters and two sealing washers, ready for immediate installation.




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