The listed products include one L5P delete plug and four replacement glow plugs; they are not interchangeable. The Pacific Performance Engineering plug is the relevant choice for a buyer seeking the listed 2017–2026 L5P delete plug, while the other options are for replacing glow plugs. Confirm the exact part and intended installation before ordering, and check applicable emissions and vehicle regulations before modifying an emissions-related system.
| Product | Best suited for | Listed distinguishing feature |
|---|---|---|
| Pacific Performance Engineering L5P Delete Plug | Buyers seeking the listed delete plug | Billet design and OEM-style snap-in fit |
| 68G Diesel Metal Glow Plug, L5P/L5D | Buyers checking a broad model-year fitment list | Multiple replacement part numbers listed |
| 68G Diesel Glow Plug, Chevy/GMC L5P | Buyers needing one replacement glow plug | Package contains one plug |
| 68G Diesel Metal Glow Plug, Corrosion-Resistant Claim | Buyers prioritizing stated material properties | Iron construction described by seller |
| GM Genuine Parts 9G Glow Plug | Buyers considering a genuine GM-branded plug | Self-regulating coil design |
PPE L5P Delete Plug
This is the only listed product identified as an L5P delete plug. Its stated application is the 2017–2026 GM 6.6L Duramax L5P. The listed features are a CNC-machined billet design, OEM-style snap-in fit, and compatibility with an intake tube locating tab.
Best for: Buyers specifically looking for the listed L5P delete plug rather than a replacement glow plug. Its stated snap-in design and locating-tab compatibility distinguish it from the other products here.
Check before buying: The supplied details do not explain the plug’s exact system location or what components it replaces. Confirm the part’s purpose, fitment for your truck, and whether the modification is legal for your intended use.
68G Metal Glow Plug For L5P And L5D
This is a replacement glow plug, not a delete plug. The listing names Chevy and GMC L5P 6.6L applications for 2017–2023 and L5D 4500 and 5500 applications for 2019–2022. It also lists replacement numbers 12690238, 12725202, 12679959, GP124, 21135, and 12666880.
Best for: Buyers whose vehicle and existing part number match the listing. The seller describes a standard-size design and says no modifications are required for installation.
Check before buying: The stated fitment years are limited to those listed, so do not assume compatibility with every 2017–2026 L5P truck. Verify the engine, model year, and part number.
68G Single Replacement Glow Plug
The listing describes this as one diesel glow plug for Chevy and GMC 2500HD and 3500HD L5P 6.6L trucks from 2017–2023, plus 4500HD and 5500HD L5P applications from 2019–2023. Listed replacement numbers include 12690238, 12679959, GP124, 21135, 12666880, and 12725202.
Best for: A buyer who needs one replacement plug and has verified the vehicle and part number. The package contents are explicitly listed as one glow plug.
Check before buying: This is not a delete component or a stated multi-plug set. Confirm how many plugs your repair requires before placing an order.
68G Iron-Structure Diesel Glow Plug
This product is another replacement glow plug, with fitment listed for Chevy and GMC L5P Duramax 6.6L models from 2017–2023 and L5D 4500 and 5500 models from 2019–2022. The seller lists the same replacement numbers as the other L5P/L5D 68G option and describes an iron structure with corrosion, heat, and wear resistance.
Best for: Buyers whose listed vehicle fitment matches and who want to compare the seller’s stated material description. Its listed model range and replacement numbers support a direct fitment check.
Check before buying: The material performance statements are seller-provided claims, not independent test results. Confirm the correct replacement number for your specific vehicle.
GM Genuine Parts 9G Glow Plug
This GM Genuine Parts 9G plug is sold as a single glow plug. Its listed features include a GN-type regulating coil and self-regulation that controls electrical flow as temperatures rise. The product description says glow plugs provide diesel engines with heat needed for cold starts.
Best for: Buyers considering a GM-branded replacement and who have confirmed that this specific 9G part fits their application.
Check before buying: The supplied product details do not establish L5P compatibility. Do not select it for an L5P solely because it is a GM Genuine Parts glow plug.
Buying Guide: How To Choose An L5P Plug
Do you need a delete plug or a replacement glow plug?
Start by identifying the part’s function. The PPE listing is the only one here labeled as an L5P delete plug. The other four products are glow plugs, which are replacement components rather than delete plugs. A product described as a glow plug should not be treated as a delete solution.
How should you verify fitment?
Compare the product’s listed engine, model year, vehicle series, and replacement part number with your truck and the part being replaced. The supplied fitment details for the 68G options stop at specified model years; they do not verify every later L5P application. Ask a qualified parts supplier or technician when the listing does not cover your exact vehicle.
What details matter for a delete plug?
Confirm the plug’s location, purpose, installation method, and any required accompanying parts with the manufacturer or installer. The PPE listing mentions an OEM-style snap-in fit and intake tube locating tab compatibility, but the supplied description does not provide full installation instructions or explain the system being modified.
Should you consider regulatory requirements?
Before modifying vehicle equipment, check federal, state, and local requirements that apply to your truck and its intended use. Requirements can depend on the modification and where the vehicle is operated. Use a qualified professional if you are uncertain about legality or installation.
Frequently Asked Questions
Is a glow plug delete the same as replacing a glow plug?
No. A replacement glow plug is a component intended to perform a glow plug’s function. A delete plug is a different part, and its purpose must be confirmed from its product documentation.
Which listed product is identified as an L5P delete plug?
The Pacific Performance Engineering product is identified as a 2017–2026 GM 6.6L Duramax L5P delete plug. Its description lists a billet design and OEM-style snap-in fit.
Are all the listed glow plugs confirmed to fit every L5P?
No. The supplied listings specify particular models and years, and the GM Genuine Parts 9G description does not establish L5P fitment. Verify the exact application before ordering.
How many glow plugs come with the single 68G listing?
The listing states that the package contains one diesel glow plug.
Can I install a delete plug without checking local rules?
Do not assume a modification is permitted. Check applicable emissions and vehicle regulations and consult a qualified professional before installation.