GlowShift Oil Filter Sandwich Plate Thread Adapter - 20mm x 1.5 Thread

In this review of the GlowShift Oil Filter Sandwich Plate Thread Adapter, the bottom line is simple: this is for anyone who wants a clean, reliable way to add up to four 1/8-27 NPT oil pressure or temperature sensors without modifying engine oil passages. Installers who value a machined aluminum adapter that sandwiches between the engine block and the oil filter will appreciate the leak-resistant O-ring seal and included port plugs. The review focuses on fit, build quality, and ease of installation for vehicles whose oil filter gasket is 3' or less in diameter.

Key Features

• Four sensor ports: Four 1/8-27 NPT female ports let users add multiple oil pressure or temperature sensors for data logging or gauges.
• Direct mount thread: The M20 x 1.5 thread installs between the engine block and oil filter for a tidy, no-drill installation.
• Complete kit: Includes an aluminum sandwich plate, O-ring, and four flush mount port plugs to provide a leak-resistant, ready-to-install solution.
• Compact compatibility: Designed to work when the oil filter gasket diameter is 3' or less, keeping the adapter compact and unobtrusive.
• Installation guidance: Comes with step-by-step instructions that simplify fitting and reduce guesswork for DIY installers.

Who It's For

The adapter is aimed at enthusiasts, tuners, and mechanics who want to monitor oil pressure and temperature with multiple sensors while maintaining stock engine interfaces. It is especially useful for track cars, modified street vehicles, and any project where adding sensors without tapping oil galleries is preferred.

It is not for vehicles whose oil filter gasket exceeds 3' in diameter or for users who require nonstandard thread sizes; in those cases a different adapter or custom solution will be necessary.

Pros & Cons

Pros

• Well-machined aluminum construction offers durability and a professional fit.
• O-ring seal and included port plugs help ensure good leak resistance during normal service.
• Supports up to four 1/8-27 NPT sensors, enabling multiple data points from a single location.

Cons

• Compatibility limited to filters with a gasket diameter of 3' or less, so measure before buying.
• Some customers report mixed experiences with the port plugs seating perfectly, so careful installation is advised.

Specifications

Our Verdict

The GlowShift oil filter sandwich adapter is a practical, cost-effective way to add multiple oil sensors without permanent engine modifications. It offers solid build quality, a complete kit with O-ring and plugs, and clear installation instructions, making it a good value for DIYers and shops that need reliable oil pressure and temperature monitoring. Measure your filter gasket before purchase and take care when seating the port plugs.

Frequently Asked Questions

Will this fit my vehicle?
It fits vehicles with an M20 x 1.5 oil filter thread and a gasket diameter of 3' or less; verify those measurements first.

How many sensors can I install?
You can install up to four 1/8-27 NPT oil pressure or oil temperature sensors using the four female ports.

Does it include a seal?
Yes, the kit includes an O-ring and four flush mount port plugs to help achieve a leak-resistant installation.