ACDelco 9G Professional Glow Plug (Pack of 1), Glow Plugs

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ACDelco 9G Professional Glow Plug (Pack of 1)

Brand: GM GENUINE PARTS

1,613 ratings

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Brand	GM GENUINE PARTS
Core material	Copper
Thread size	10 millimeters
Top material type	Metal
Vehicle service type	Truck

About this item

Designed to give diesel engines the heat they need for cold starts
The ACDelco Professional Glow Plugs can function under higher voltages than other glow plugs
GN-type regulating coil
Self-regulating to control electrical flow from battery as temperatures rise to avoid overheating
Full range of reaches – from 21 mm to 40 mm – to meet chamber requirements in a wide variety of applications

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This item: ACDelco 9G Professional Glow Plug (Pack of 1)

$41.48

Get it by Wednesday, Jul 23

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ACDelco GM Original Equipment PF2232 Engine Oil Filter

$22.14

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6.6 Duramax Diesel Fuel Filter with Seals TP3018, TP3012, 12664429, 12633243 Replacement for Chevy Silverado 2500 HD 3500 HD 2001-2016 Express GMC Sierra 2500HD 3500HD Savana (1Pc)

$29.59

Get it by Friday, Jul 25

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From the manufacturer

Iridium Spark Plugs

Iridium Spark Plugs are engineered to offer excellent engine idling stability and a smooth performance.

Iridium offers excellent engine idle stability and smooth performance
One-piece suppressor seal blocks radio frequencies that can affect vehicle electronics
Suppressor seal meters spark energy for long electrode life and seal against combustion leakage

Platinum Spark Plugs

Platinum spark plugs are designed to deliver long-lasting performance and maximize durability.

One-piece, fired-in suppressor seal blends three glass types for a gas-tight seal
Helps reduce radio frequency and engine interference, regulate spark plug energy and seal against compression pressures for long life
Double platinum point pad on center and ground electrode offers durability and consistent voltage demands to help reduce wear on ignition system
Pure copper core results in cooler electrode temperature for durability and superior fouling resistance

RAPIDFIRE Spark Plugs

RAPIDFIRE spark plugs are made with ribless insulators to help optimize plug-to-boot seal.

Solid-state suppressor with two-piece glass and brass seal
Helps reduce radio frequency interference, regulate spark energy for long electrode life and protect against high combustion pressures
Pure copper core provides great heat transfer and helps maximize plug durability
Platinum on center electrode enables superior spark characteristics and helps reduce voltage requirements of the ignition system
Ribless insulator provides a great plug to boot seal

Conventional Spark Plugs

Designed with a high-quality copper core, these spark plugs help deliver reliable performance.

Black onyx coating helps prevent corrosion
Copper core provides great heat transfer and helps maximize plug durability
Ribbed suppressor seal extends resistance and helps prevent spark “flash over” and misfires
Nickel-chrome alloy sheathing helps prevent corrosion on center electrode
Available for use in marine applications

At GM Genuine Parts and ACDelco, we strive to blend quality and expertise to keep you moving forward

Product description

ACDelco 9G Professional Glow Plug (Pack of 1)

Product information

Technical Details

Manufacturer	‎ACDelco
Place of Business	‎GRAND BLANC, MI, 48439 US
Brand	‎GM GENUINE PARTS
Model	‎9G
Product Dimensions	‎15.75 x 2.54 x 2.54 cm; 40.82 g
Item model number	‎12639701
Is discontinued by manufacturer	‎No
Exterior	‎Machined
Manufacturer part number	‎12639701
OEM part number	‎12639701
Item Weight	‎40.8 g
Country of origin	‎USA

Additional Information

ASIN	B00496LXJ8
Customer Reviews	1,613 ratings 4.5 out of 5 stars
�鶹�� Rank	#50,699 in Automotive (See Top 100 in Automotive) #8 in Automotive Replacement Ignition Glow Plugs
Date First Available	Oct. 6 2014

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	This Item ACDelco 9G Professional Glow Plug (Pack of 1)	Recommendations Bosch 0250212014 Glow Plug	�� Diesel Glow Plug 9G 12639701 97364968 Replacement for Chevy GMC 6.6 LBZ LGH LLY LML LMM Duramax 2006-2016 Silverado Sierra 2500HD 2007-2016 Silverado Sierra 3500HD 2006-2016 Express Savana 2500 3500	�� Bosch (80050) Glow Plug	�� Bosch 0250603008 Glow Plug	�� ACDelco 60G Glow Plug
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Price	$41.48	$27.07	$14.95	$32.97	$50.67	$26.46
Delivery	Get it by Wednesday, Jul 23	—	Get it by Saturday, Jul 26	Get it by Wednesday, Jul 23	Get it by Friday, Aug 8	—
Customer ratings	4.51,613	5.019	3.978	4.4258	4.450	4.5160
Sold by	�鶹��.ca	�鶹��.ca	Gohantee	Euro Parts Etc	�鶹��.ca	�鶹��.ca
compatible vehicles	Truck	Truck	Truck	Car	Car	UTV, Bus, Scooter, Van, Watercraft
number of items	1	1	—	1	1	1
thread size	10 millimeters	M14x1.25	M14x1.5	—	8mm	14mm
core material	Copper	Alloy Steel	Nickel	Nickel	Nickel	Platinum

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Customer reviews

1,613 global ratings

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Customers say

Customers like the functionality, fit, and quality of the spark plug. They mention it works great, fits LML engines, and fixes their check engine light issues. Customers also say it's a great replacement part.

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Functionality Fit Engine light Quality Replacement parts

13 customers mention "Functionality"13 positive0 negative

Customers are satisfied with the functionality of the spark plug. They mention it works great, fixes their issues immediately, and is cheaper than a parts store.

"Works great! No engine light:) 2014 . 2500 hd duramax 6.6" Read more

"Installed and it works." Read more

"Direct replacement worked great" Read more

"Perfect. Fixed the issue immediately. Be cautious tightening the nut for the wiring as it snaps off very easily." Read more

9 customers mention "Fit"9 positive0 negative

Customers are satisfied with the fit of the spark plug. They mention it fits LML engines and fixes the issue immediately.

"replaced the one not working.a perfect fit." Read more

"Perfect fit..." Read more

"...one from the dealer ship a little more expensive but fit perfectly no issues." Read more

5 customers mention "Engine light"5 positive0 negative

Customers are satisfied with the spark plug. They mention it works great and fixes their check engine light.

"Fixed my check engine light. Not an easy replacement on the drivers side of my LMM, even with the tire off and wheel well removed...." Read more

"...They were simple and easy to change and once I cleared the code engine light remained off...." Read more

"Glow plug works OK, but was not supplied with retaining nut for wire harness. Had to use old rusted nut instead...." Read more

4 customers mention "Quality"4 positive0 negative

Customers are satisfied with the quality of the spark plug. They mention it's a great product.

"Great product" Read more

"Price and quality are good. Installed in my 2006 duramax." Read more

"Quality matters when it comes to our GM trucks!..." Read more

"Great product..." Read more

3 customers mention "Replacement parts"3 positive0 negative

Customers are satisfied with the replacement parts. They mention they're a great replacement for the LML Duramax.

"Great replacement part for the LML Duramax" Read more

"Good replacement..." Read more

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Top reviews from Canada

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toby100chien
parfait
Reviewed in Canada on October 26, 2024
Verified Purchase

cmc sierra 2500hd duramax

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Helpful

Rick P.
Quality matters when it comes to our GM trucks!
Reviewed in Canada on November 23, 2019
Verified Purchase
Back in July, #8 glow plug died so I replaced with an ac delco 9G and has not failed since ! This week, the opposite side #7. I can see the pattern here , so I ordered an extra for the shelf in "waiting!" One will argue why not change them all at once?? My truck has 447.000 km so obviously, parts wear & fail. Also, I like to pull my inner fenders I get to inspect so much more in doing so. Anyway, AC DELCO 9G glow plug for me is my # 1 choice for my truck.

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2 people found this helpful

Helpful

Gary Tapp
Acdelco … very good brand !
Reviewed in Canada on December 31, 2022
Verified Purchase
Don’t buy any of the cheap glow plugs , go with these , the last , the last set I put in lasted 4 years … haven’t had any break off so far which is a good

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Helpful

Ace
Still working no codes
Reviewed in Canada on November 10, 2024
Verified Purchase
Installed 3 of them no more codes

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byodave
Get the proper GM part for your diesel
Reviewed in Canada on October 22, 2022
Verified Purchase
Fixed my check engine light. Not an easy replacement on the drivers side of my LMM, even with the tire off and wheel well removed. Get 4mm nuts before you start as existing will most likely be rusted.

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One person found this helpful

Helpful

Kitty Roberts
2014 . Duramax
Reviewed in Canada on October 11, 2023
Verified Purchase
Works great! No engine light:) 2014 . 2500 hd duramax 6.6

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Helpful

Aaron Dudenhoffer
lasted 8 months
Reviewed in Canada on November 19, 2024
Verified Purchase
This glow plug only lasted 8 months

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Helpful

Arcwelder
thumbs up!!
Reviewed in Canada on December 2, 2017
Verified Purchase
My code reader said #7 glow plug was out so I bought 4 right away and did the four on the passenger side. The original lasted in my 2011 2500 Silverado for 211,000 kms.
They were simple and easy to change and once I cleared the code engine light remained off. If your wondering what brand is used from the factory it is Beru but AcDelco is an excellent product too.

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2 people found this helpful

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Kathleen Wilson
Worked perfect
Reviewed in the United States on June 22, 2025
Verified Purchase

Ordered for hubby
Just what he needed

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Roi Soleil
Gran calidad
Reviewed in Mexico on December 1, 2018
Verified Purchase
Excelente calidad OEM, es de la marca Beru, es el reemplazo perfecto

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Translate review to English
XonXoff
All good!
Reviewed in the United States on December 30, 2024
Verified Purchase
I've replaced two of eight so far (235k miles) with glow plugs from this seller. Ships in OEM box, identical to the ones removed. Both are working fine. Just ordered two more to have on-hand. 2015 2500HD Silverado LML Duramax. Generally easy fix if you remove the inner fender well.

Most are very easy access but #8 was tight quarters. Not bad with a 3/8" swivel and/or flex driver. You'll need a 10mm deep socket for the injector, 8mm socket for the nut, and a scan tool of some sort to turn the CEL off after replacement. Don't drop that little nut. ~Hour job.

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Donald k.
Not too bad
Reviewed in the United States on July 15, 2025
Verified Purchase
Perfect it was surprisingly easy to change myself and I probably saved myself 500 bucks doing it

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iSLA uNDERWOOD
Worked great
Reviewed in the United States on May 11, 2025
Verified Purchase
Great product

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ACDelco 9G Professional Glow Plug (Pack of 1)

Purchase options and add-ons

About this item

Frequently bought together

Videos for similar products

Brand in this category on �鶹��

From the manufacturer

Iridium Spark Plugs

Platinum Spark Plugs

RAPIDFIRE Spark Plugs

Conventional Spark Plugs

Product description

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Top reviews from Canada

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5.0 out of 5 stars Worked perfect

5.0 out of 5 stars Gran calidad

5.0 out of 5 stars All good!

5.0 out of 5 stars Not too bad

5.0 out of 5 stars Worked great

Worked perfect

Gran calidad

All good!

Not too bad

Worked great