NGK Ceramic Diesel Glow Plug for Volkswagen Beetle, Jetta, and Touareg (2004–2008)

NGK 9810 is a ceramic diesel glow plug for the Volkswagen Beetle, Jetta, and Touareg. It heats the combustion chamber to help the engine fire, especially on a cold start. It uses NGK's NHTC (New High Temperature Ceramic) design with a fully ceramic heating element. That element reaches 1,000°C in under two seconds and can afterglow for more than ten minutes at up to 1,350°C. NGK built this design to help manufacturers meet Euro 4 and Euro 5 emissions standards, which call for lower diesel compression ratios. It is made in Japan to OE quality, with the size designation M10x1x30.

This NGK glow plug carries a 24-month / 24,000-mile warranty.

Afterglow keeps combustion steady after startup. The plug can also glow in between, to keep the particulate filter from cooling during deceleration and to support filter regeneration, which reduces particle emissions. The plug turns electrical energy into heat at its tip near the combustion area. A failed element can make cold combustion uneven even when the engine still cranks normally. This part corresponds to VW OE numbers N10591608 and N10591604, and NGK also identifies it as CZ104.

Technical Details

• Manufacturer: NGK, a brand of Niterra Co., Ltd., Nagoya, Japan
• NGK part numbers: 9810 and CZ104
• OE references: N10591608 and N10591604
• Type: NHTC fully ceramic heating element
• Heat-up: 1,000°C in under two seconds
• Afterglow: more than ten minutes at up to 1,350°C
• Size designation: M10x1x30
• Made in Japan, OE quality
• Warranty: 24 months / 24,000 miles

Common Questions

What symptoms point to a failed glow plug?
Hard cold starts, rough running after a cold start, and a glow plug warning light are typical. Compression and fuel delivery faults can cause similar symptoms, so diagnose before replacing.

Does a ceramic glow plug last longer?
NGK states that its ceramic glow plugs give long service life and fast, dependable ignition even at very low outside temperatures.

Fitment & Compatibility

Check the fitment table below for the Volkswagen models this glow plug covers. Make sure your vehicle has a diesel engine. Send us your VIN and we will confirm fit.