SKU: 51441129731

NGK Spark Plug for Opel, Citroën & Peugeot - LZKR6AI-10G

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Description

NGK Spark Plug for Opel, Citroën & Peugeot - LZKR6AI-10GVehicle Fitment & Part Details This NGK spark plug (LZKR6AI 10G) is supplied as an OEM grade replacement. Heat range 6. Thread M12 x 1,25. Verify VIN engine before ordering. Key Details SKU LZKR6AI 10G Alternate Search Reference LZKR6AI10G Component Spark Plug Brand NGK Heat Range 6 Part MPN 97999 GTIN Barcode 087295979990 Trade Numbers LZKR6AI 10G Product Specifications Thread Size M12 x 1,25 Thread Length [mm] 26,5 Spanner Size 16 mm Spark Position

Vehicle Fitment & Part Details

This NGK spark plug (LZKR6AI-10G) is supplied as an OEM-grade replacement. Heat range 6. Thread M12 x 1,25. Verify VIN/engine before ordering.

Key Details

SKU
LZKR6AI-10G
Alternate Search Reference
LZKR6AI10G
Component
Spark Plug
Brand
NGK
Heat Range
6
Part MPN
97999
GTIN / Barcode
087295979990
Trade Numbers
LZKR6AI-10G

Product Specifications

Thread Size
M12 x 1,25
Thread Length [mm]
26,5
Spanner Size
16 mm
Spark Position [mm]
5,0
Electrode / Construction
Iridium Middle Electrode, 1 - Earthed Electrode, Interference Suppression 5 kOhm, with gasket seat, Fixed SAE connector
Brand Class
Premium

Vehicle Compatibility

Common fitments include Opel (CORSA, CROSSLAND); Peugeot (108, 208, 301, 308, 2008). Always confirm the correct heat range and electrode design for your specific engine variant by VIN before ordering.

OEM Reference Numbers

Vehicle OE Numbers

  • General Motors: 95528734, 3639498
  • Peugeot: 96 762 881 80, 16 545 093 80

Aftermarket Equivalents

  • Beru By Driv: Z381
  • Borgwarner (Beru): Z 381
  • Bosch: 0 242 129 525, 0 242 129 806, YR8SII30W, CITROËN, 16 545 093 80, 96 762 881 80, CITROËN/PEUGEOT
Alternate OEM Search References: 9676288180, 1654509380, 0242129525, 0242129806

Fitment Notes

  • Always match heat range, thread size and electrode design before ordering. Verify VIN/engine.

Important: Spark plugs are not returnable, exchangeable, or refundable once fitted. Confirm you are ordering the correct part for your vehicle. Compare the new spark plug to the removed plug for thread reach, thread diameter, hex size, electrode style, gap specification, and heat range before fitting. Mismatched spark plugs can cause misfires, pre-ignition, detonation, fouling, or engine damage.

Returns Notice: Once a spark plug has been fitted or threaded into a cylinder head, it cannot be returned, exchanged, or refunded under any circumstances.

Installation / Use / Maintenance Tips

  • Allow the engine to cool fully before removal - cylinder heads are easily damaged when warm.
  • Use the correct deep-socket plug spanner (16 mm) and avoid impact tools.
  • Inspect the existing plug for fouling, oil contamination, or worn electrodes - may indicate engine condition issues.
  • Verify the gap if your supplied plug is not factory-set; consult your service manual for the correct value.
  • Apply a small amount of anti-seize to the threads (sparingly) and torque to manufacturer specification.

Common Questions

Will this NGK spark plug fit my Opel?
This part (LZKR6AI-10G) is listed for the applications shown on this page. Always confirm the correct heat range, thread size and electrode design against your vehicle's service manual or a parts lookup before ordering. Verify VIN/engine.

What does the NGK part code mean?
The NGK trade number encodes physical and performance characteristics - thread/reach, electrode design, heat rating, and projection. Each digit and letter has meaning in NGK's naming convention. The heat range is usually the standalone digit (e.g. BPR6ES is heat range 6).

What is the difference between this NGK plug and a Bosch / Champion / Denso equivalent?
The cross-references listed under OEM Reference Numbers are functionally equivalent for the same applications, but materials, electrode design and heat dissipation can differ slightly. NGK is OEM-supply quality and most manufacturers specify NGK or Denso as their factory plug.

How do I confirm fitment if my engine variant isn't listed?
Match the supplied thread size, reach, electrode design and heat range against your existing plug. If unsure, request fitment assistance before ordering.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 51441129731

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4.3 ★★★★★
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Verified Purchase
Donna Garrett
Boise, US
★★★★★ 5
TDI Seems To Like This Stuff. A Must For US D2 Fuel.
Size: 1 Count (Pack of 1)
After purchasing our 2012 VW TDI diesel at 140K miles I started researching best practices to keep these little engines happy. What I read was that the US has some of the crappiest quality D2 diesel on the world stage. Even Canada's diesel is higher cetane and lubricity rated than the States not to even mention Europe which has WAY higher standards than us. The weak point of these TDI engines seems to be the high pressure fuel pump (HPFP) that is crank driven to enormous pressure for the injectors to to their thing. If these HPFP parts fail on common rail engines they can literally grenade and throw shards of metal everywhere within the downstream fuel system ensuring a VERY expensive repair if not destroying the engine altogether. The lubricating property of the fuel plays an important part in keeping these pumps working properly. There even seems to be some data supporting Canadian operated TDIs have fewer failure rates of the HPFP than stateside fueled vehicles although nothing had been officially published to my knowledge. Sulpher in the diesel had beneficial lubricating properties but was bad for the environment and subsequently removed from D2 by the EPA much like leaded gasoline of yesteryear. So the second tank I ran in my TDI was Hot Shot's EDT. I can't comment on the comparative difference as I ran this from almost day one. What I like is the claimed increased lubricity and cetane boost that is supposed to bring our crappy D2 up to reasonable levels the rest of the world enjoys. Fuel economy seems fine but playing with a low spun turbo and the subsequent torque is sometimes too irresistible to give fuel economy a fair chance. Besides, I need to blow out all that accumulated carbon :) I like the fact that the Hotshot's EDT seems more concentrated and affordable than the competition. 1oz for a tank is almost a performance treatment for my TDI. It's a negligible cost for a fill up and I hope they keep it that way. My dislike might be the one thing other people love about this product and that's the bottle. The bottle is meant to be squeezed to get the measured amount in the top fill area so measuring is easier. My concern is the filler neck is not long enough to cram into the filler to avoid spilling without a funnel and diesel doesn't do many favors to paint. My workaround was to save the empty bottles from other gasoline treatments and use a syringe to fill 1oz amounts of EDT and place in the trunk of the car in double plastic bags. Seems to work fine although the kitchen was probably not the best place to do this since it doesn't smell like flowers. Next purchase will likely be the bulk bottle. It's kind of a shame we actually need this kind of protection now since the US fuel standards are almost non-existent. Even B1 blended bio diesel would be a huge improvement in lubricity but not available where I live. Thanks Hotshot's...Good stuff!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 31, 2020
S
Verified Purchase
SCOTT
Cuba, US
★★★★★ 5
Recommended by John. So far great additive for the CP4
Size: 16 Fl Oz (Pack of 2)
I have a ‘22 6.7 Powerstroke w/27k and pull heavy trailers in FLA. I’m worried about the (disco party). John I believe from the Ford Dealer in Hereford, Tx recommended this. I run 2 oz per fill and will see what happens. I’ve got Five fill ups on it now and seems to help responsiveness. Proof will be in the pudding. So far I’m pleased
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026
R
Verified Purchase
ReevesRacing
Los Angeles, US
★★★★★ 5
Quieter and more mpg in TDI
Size: 1 Count (Pack of 1)
Didn't really believe the hype. Did a little research and watched Project Farm and decided to try. Im not a snake oil guy....but I will say my 2013 common rail TDI is quieter and I get a tad more fuel mileage. Does it pay for itself? Well, it does get better mpg, but I feel the reduction in noise most likely relates to less wear and tear and thats good enough for me. Im only using 1oz per fill up (about 14 gallons) so it lasts a very long time. I get 40mpg and im not light footed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026
J
Verified Purchase
James Jay
Whiting, US
★★★★★ 5
It's a spark plug
What i needwd
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
C
Verified Purchase
CS
Draper, US
★★★★★ 5
Got to have spark for the gasoline combustion engine to run
It is a spark plug, it made spark and engine ran. It done what it was intended to do
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 10, 2026

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