The Haltec 753S-18 is a heavy-duty, 18-inch large bore tire valve extension engineered specifically for commercial, agricultural, and off-the-road (OTR) heavy equipment. It provides a reliable solution for extending hard-to-reach valve stems on dual assemblies or deeply recessed wheels, making tire inflation and pressure checks safe and efficient. Constructed with a flexible inner tubing shielded by a rugged outer casing, this extension can be easily bent by hand to the precise configuration required for your specific rim assembly.

Key Features & Technical Specifications:

• Extended Reach: 18-inch (457.2 mm) effective length to clear complex rim geometries.
• Large Bore Design: Optimizes airflow for rapid inflation and deflation of high-volume industrial tires.
• Hand-Bendable Rigidity: Can be custom-shaped by hand to clear brake drums or wheel components, maintaining its shape once bent.
• Leak-Proof Dual Seal: Equipped with a high-grade Teflon gasket on the valve stem interface and a heavy-duty 3/4-inch hex sealing nut featuring an integrated thread-locking lead seal to prevent pressure drop.
• Secure Mounting: Includes two dedicated lock nuts to firmly anchor the assembly to the wheel rim, preventing rotational movement or vibration fatigue during operation.

• Includes: 1x 18" Extension, 1x 3/4" Hex Sealing Nut, 2x Lock Nuts.
• Note: Does not include the valve cap or inner valve core. The installer must transfer the existing valve core from the main stem to the outer tip of the extension prior to inflation.

• Specifications