Antra Autotech

Engine Valve Manufacturer

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Engine Valves & Valve-Train Components

The core of our catalog: intake and exhaust valves across multiple steel grades and configurations, manufactured to OEM specification.

CORE PRODUCT LINE

Engine Valves

We manufacture intake and exhaust valves across multiple steel grades and configurations to match OEM specifications.

Automotive Engine Valves

Passenger cars and light commercial vehicles.

Diesel & Heavy Commercial Vehicle Valves

Trucks, buses, off-highway equipment.

Two- and Three-Wheeler Valves

Motorcycles, scooters, auto-rickshaws.

Agricultural & Tractor Valves

Built for extended duty cycles.

Marine & Stationary Engine Valves

Generators, compressors, industrial engines.

Sodium-Filled / Hollow-Stem Valves

For high-heat, high-performance applications.

Custom & Special-Application Valves

Built to customer drawing or sample.

Materials

EN52, SUH3, SUH11, 21-4N and more — see our full material range.

VALVE-TRAIN COMPONENT

Valve Guides

Precision-bored guides that keep valve stems aligned and reduce wear across the valve’s service life. Available in bronze and cast iron, matched to OEM bore and length specifications.

Why It Matters

Correct guide bore and clearance keep the valve stem centered under thermal expansion — misalignment accelerates wear on both the guide and the seat.

VALVE-TRAIN COMPONENT

Valve Seats

Heat- and wear-resistant valve seat inserts engineered to hold sealing tolerance under continuous thermal cycling — supplied loose or pre-fitted per customer requirement.

Supply Options

Supplied loose or pre-fitted per customer requirement — ready for direct assembly on request.

BEYOND THE CATALOG

Custom Manufacturing

Have an OEM drawing or a sample part that isn’t in our standard catalog? We take on custom specifications for qualified order volumes — send us your drawing, sample, or part number, and our engineering team will confirm feasibility, tooling lead time, and MOQ.

Quality Standards

Every product line above is backed by material testing, dimensional inspection, and batch traceability available on request.