Electrical Test Harnesses
& Leak Test Seals

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948 x 753

About R&J

Built For Production Reliability

We partner with automotive teams to design and manufacture durable test harnesses and leak test fixtures that hold up under real cycle-time pressure.

Expert Engineering

Experienced fixture and validation design support from concept to launch.

Production-Proven Quality

Built for repeatability and maintainability in demanding plant environments.

What We Provide

Wide Range Of Our Products

Standard Seal Catalog

Proven engine and transmission leak test seal designs since 1962, delivering reliable, repeatable sealing performance in demanding test environments.

Custom Leak Test Seals

Custom leak test seals tailored to your requirements, engineered with high-performance materials for durability, precision fit, and consistent real-world performance.

Electrical Test Connectors and Harnesses

Urethane-molded connectors with replaceable pogo pins for accurate, repeatable sensor testing on engines and transmissions in high-cycle production environments.

ECM/TCM Programming Pods

Custom ECM and TCM programming pods with durable urethane molding and replaceable pogo pins for reliable module communication across every programming cycle.

Electrical Test Harnesses& Leak Test Seals