Bonbo Oil Pressure Gauge Adapter Kit EN-47971 & 7219 for GM Gen III–V V8 (1996–2006) — Dual-Port Aluminum

This two-piece adapter kit replaces the spin-on oil filter and adds dual ports for connecting an oil pressure tester or permanent gauge. Designed specifically for GM 1996–2006 Gen III V8s (4.8L, 5.3L, 5.7L, 6.0L) and later Generation IV/V V8 models, the kit provides straightforward access to measure oil pressure without cutting fittings or using temporary fittings that can leak.

How does the kit attach to my engine and gauge?

The EN-47971 / 7219 set installs in place of the spin-on oil filter cartridge and provides two threaded ports for gauge connections. One port faces the bottom for vertical tester hoses and the other faces the side for inline or permanent gauge fittings, giving flexibility for workshop diagnosis or dash mounting.

• Replaces factory spin-on filter element location for a sealed fit.
• Dual threaded ports support bottom and side tester connections.
• Works with standard oil pressure test hoses and 1/8"-27 or similar gauge fittings.

Will these adapters fit my GM V8 (which years and engines)?

The kit is tailored for GM Generation III (1996–2006) V8s including 4.8L, 5.3L, 5.7L and 6.0L engines via the 7219 adapter, while the EN-47971 unit covers Generation IV and V V8 platforms such as later Corvettes and Cadillac performance models. Confirm compatibility by matching the oil filter-style housing and thread pattern on your engine.

• 7219: Designed for GM Gen III V8s (1996–2006) 4.8L–6.0L engines.
• EN-47971: Fits many Gen IV and Gen V V8 oil filter housings.
• Similar fitment to service part references like J-42907—check threads and filter location before purchase.

What materials and durability features should I expect?

The adapters are machined from high-grade aluminum for corrosion resistance, strength and long service life. Precision machining and hardened threads reduce the chance of leaks, galling or damage during repeated gauge connections in a shop or at the track.

• CNC-machined aluminum construction for corrosion and impact resistance.
• High-precision threading and sealing surfaces to prevent leaks.
• Durable finish and hardness for repeated use with test equipment.

How will using this kit change routine maintenance or troubleshooting?

Having quick access to accurate oil pressure readings simplifies diagnostics and routine checks, allowing you to spot pressure drops or anomalies without disassembling the engine or improvising fittings. It’s useful for pre- and post-upgrade checks, troubleshooting unusual lifter or oil system behavior, and verifying oil pump operation after service.

• Enables fast oil pressure checks during maintenance or track days.
• Removes need for temporary tap fittings that may leak or damage ports.
• Supports both temporary testing and installation of permanent gauges.

Who is this for: The Bonbo EN-47971 & 7219 adapter kit is aimed at DIY mechanics, performance tuners and professional shops working on GM V8 vehicles from 1996 onward who need reliable, repeatable access to oil system pressure. If you install gauges, diagnose oil-related performance issues, or frequently test oil pressure after engine work, this durable, precision kit offers a cleaner, safer alternative to jury-rigged fittings.