GJYSYP Oil Block Off Plugs for Non-AFM GM LS/LT Engines – 8-Pack (4.8L–6.2L)

Overview

Protect your non-AFM GM engine oil passages with the GJYSYP Oil Block Off Plugs. Precision-made in stainless steel, these valley seal plugs are designed for LSX-series (LS1/LS2/LS3/LS7, etc.) and LT-series (LT1/LT4/LT5, etc.) engines built between 2008 and 2023. They support 4.8L, 5.3L, 6.0L, and 6.2L displacements and come as an 8-pack, making them suitable for full valve train disconnections or AFM/DOD passage sealing under the VLOM plate.

Key benefits at a glance

• Compatibility across non-AFM GM LSX and LT engines (2008–2023) with 4.8–6.2L displacements.
• High-precision stainless steel machining with anti-corrosion surface treatment for long-term reliability.
• Flush install design that sits level with the bottom edge of the bung; top features removable threads (4 mm x 0.7) for easy removal.
• Seals the oil circuit to help maintain engine oil pressure stability and reduce AFM/DOD oil passage concerns.
• Includes an 8-pack for convenient service and consistent coverage across multiple engines.
• Clear installation guidance and a manufacturer warranty for peace of mind.

What you get and how it helps

• What you get: Eight precision plugs designed for 2008–2023 non-AFM GM LSX/LT engines.
• Material and finish: Stainless steel with corrosion resistance for durable performance.
• Fit and flush appearance: Plugs sit flush with the bottom edge for a neat installation.
• Removal convenience: Top threads (4 mm x 0.7) make extraction simpler if needed.
• Quality assurance: GJYSYP warranty and dedicated after-sales support.

Installation tips and notes

Tap the plug into the oil passage hole with care and ensure it is flush with the bottom edge of the plug. If you encounter any gaps during seating, reattempt the installation after a brief cooling period to encourage a tighter fit. This helps ensure a reliable seal without forcing the part. Keep in mind this is a maintenance part intended for non-AFM configurations and should be used as part of a broader engine servicing plan.

Technical specifications

• Compatible models: Non-AFM GM LSX and LT engines (LS1/LS2/LS3/LS7, LT1/LT4/LT5, etc.).
• Displacement range supported: 4.8L, 5.3L, 6.0L, 6.2L.
• Material: Stainless steel with anti-corrosion treatment.
• Finish: Durable, precision-machined surface.
• Installation: Flush with the bottom edge; top threads for removal (4 mm x 0.7).
• Package quantity: 8 plugs.

Warranty and support

GJYSYP provides strict quality inspection and reliable after-sales service. If you have questions, reach out for fast responses and a worry-free warranty experience.