The Holley EFI 1/8 NPT sensor block gives pressure transducers a stable, remote mounting point instead of rigidly threading them straight into the engine. It accepts any transducer using 1/8 NPT male threads with a 7/8" or smaller body/hex diameter, keeping multiple sensors organized in one easy-to-reach spot in the engine bay.
Specifications:
- Material: Military-grade 2024 aluminum, black anodized finish
- 4 independent ports, each with 3 inlets/outlets
- 4 mounting holes sized for 5/16" socket head cap hardware
- Weight: 0.50 lbs.
- Laser-etched with the Holley EFI logo
- Part Number: 534-35
Remote-mounting transducers through this block eliminates the vibration- and heat-related inaccuracies that come from threading sensors directly into the engine.
FAQ
What transducers fit the 534-35 sensor block?
Any pressure transducer using 1/8 NPT male threads with a body or hex diameter of 7/8" or smaller.
How many sensors can be mounted on one block?
The block has 4 independent ports, each with 3 inlets/outlets, so multiple transducers can be mounted in one location.
What is the sensor block made from?
Military-grade 2024 aluminum with a black anodized finish for durability.
What hardware is needed to mount it?
4 mounting holes are machined for 5/16" socket head cap hardware.

