Larlansz Oil Pressure Sensor Kit for 2003–2008 Chevy/GMC LS V8s — Aluminium Sender + 1 1/16" Socket

This compact kit combines a corrosion-resistant aluminum oil pressure sending unit, a protective filter, and a dedicated 1 1/16" socket so you can swap a faulty sensor quickly without guessing fitment. It’s engineered for LS-family V8 and related engines used across trucks, SUVs and performance cars from the mid-2000s, and it’s supplied to match common OE electrical and thread interfaces so the instrument cluster receives reliable pressure data.

Which vehicles and engines does this sensor fit?

The Larlansz unit covers a broad list of GM products from 1997–2009 depending on model, with strongest coverage across 2003–2008 trucks and SUVs. It suits many 4.8L, 5.3L, 6.0L and 6.2L engines and selected V8 applications in Chevrolet, GMC, Cadillac, Buick, Pontiac, Isuzu and Hummer. Always confirm your OEM part number or year/model combo before ordering to ensure interchangeability.

• Covers Silverado, Sierra, Tahoe, Suburban, Yukon, Avalanche, and more (2003–2008 coverage).
• Also fits Corvette models 1997–2008 and select Impala/Monte Carlo years.
• Compatible with OEM numbers including 12677836, 12616646, 12573107 and D1846A.

How does this sensor improve oil pressure readings?

This sensor converts mechanical oil pressure into an electrical signal for the dash gauge or ECM, replacing worn or leaking original parts that cause erratic or stuck readings. The aluminum housing resists rust and maintains consistent performance, while the included filter helps prevent debris-related failures. Proper fit and clean connections help restore accurate and stable instrument-cluster information.

• Aluminum construction for long-term corrosion resistance and stable output.
• Included filter reduces particulate contamination risk at the sensor inlet.
• Designed to match OEM thread and electrical interfaces for plug-and-play replacement.

What’s in the kit and what tools do I need?

The Larlansz package includes the oil pressure sending unit, a replacement filter, and a dedicated 1 1/16" socket sized for installation or removal. The socket accepts a 3/8" drive or a 1 1/8" hex wrench, which simplifies removal in tight engine bays without needing an unusual specialty tool. Typical installation requires basic hand tools and a short period of time; torque to the manufacturer’s spec and ensure electrical connection is secure.

• 1 x oil pressure sensor (aluminum body) for direct replacement.
• 1 x inline filter to protect sensor internals from debris.
• 1 x 1 1/16" socket compatible with 3/8" drive or 1 1/8" hex wrench.

Will this unit fix gauge or warning light issues?

If a faulty sensor is the cause of a fluctuating gauge or oil pressure warning light, replacing it with this direct-fit unit often resolves the symptom. However, electrical wiring faults, grounding issues, or true oil pressure problems from the pump or engine must be diagnosed separately. Use proper diagnostics before concluding a sensor swap is the sole remedy.

• Best for electronic gauge errors caused by a failed sending unit.
• Not a substitute for repairs to oil pump, oil passages, or low-oil conditions.
• Pair replacement with connector and wiring inspection for reliable results.

Who is this for: This Larlansz sensor and socket kit is aimed at DIY mechanics, independent shops, and fleet maintainers working on mid-2000s GM trucks, SUVs and performance cars that use LS-family engines or listed compatible models. It’s especially useful when you need a corrosion-resistant replacement that fits common OEM part numbers and includes the socket to finish the job without extra purchases.