NGK 6840 - Alternative spark plugs

There are 10 replacement spark plugs for NGK 6840. The cross references are for general reference only, please check specifications for your application.

Specifications for NGK 6840

Thread diameter
14.0 mm
Thread reach
19 mm
Hex size
16 mm

NGK 6840 replacement spark plugs

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Replacement spark plugs for NGK 6840 on Amazon

Genuine Audi (101905621) Spark Plug
Genuine Audi (101905621) Spark Plug
USD 33.81
TORCH K7RTP Platinum Spark Plug Replace for Autolite 3922 XS3922 Spark Plug, for CHAMPION
TORCH K7RTP Platinum Spark Plug Replace for Autolite 3922 XS3922 Spark Plug, for CHAMPION
USD 7.99
DENSO # 5310 IRIDIUM Power Spark Plugs - IK22-4 PCS *NEW*
DENSO # 5310 IRIDIUM Power Spark Plugs - IK22-4 PCS *NEW*
USD 39.98
6 New DENSO Iridium Spark Plugs IK22# 5310
6 New DENSO Iridium Spark Plugs IK22# 5310
USD 54.37
Denso (5310) IK22 Iridium Power Spark Plug, (Pack of 1)
Denso (5310) IK22 Iridium Power Spark Plug, (Pack of 1)
USD 8.67
Denso IK22 Iridium Spark Plug
Denso IK22 Iridium Spark Plug
USD 15.00

Applications for this plug

Make Model Engine Years Engine size HP kW Gap Notes
AUDI A4 (8EC, B7) 3.2 FSI 3.2 FSI 2005-2008 3123 255 188
AUDI A4 (8EC, B7) 3.2 FSI quattro 3.2 FSI quattro 2005-2008 3123 255 188
AUDI A4 (8EC, B7) RS4 quattro RS4 quattro 2005-2008 4163 420 309
AUDI A4 Avant (8ED, B7) 3.2 FSI 3.2 FSI 2005-2008 3123 255 188
AUDI A4 Avant (8ED, B7) 3.2 FSI quattro 3.2 FSI quattro 2005-2008 3123 255 188
AUDI A4 Convertible (8H7, B6, 8HE, B7) 3.2 F… 3.2 FSI 2006-2009 3123 255 188
AUDI A4 Convertible (8H7, B6, 8HE, B7) 3.2 F… 3.2 FSI quattro 2006-2009 3123 255 188
AUDI A4 Convertible (8H7, B6, 8HE, B7) RS4 q… RS4 quattro 2006-2009 4163 420 309
AUDI A6 (4F2, C6) 3.2 FSI 3.2 FSI 2004-2009 3123 255 188
AUDI A6 (4F2, C6) 3.2 FSI quattro 3.2 FSI quattro 2004-2008 3123 255 188
AUDI A6 Allroad (4FH, C6) 3.2 FSI quattro 3.2 FSI quattro 2006-2008 3123 255 188
AUDI A6 Avant (4F5, C6) 3.2 FSI 3.2 FSI 2005-2008 3123 255 188
AUDI A6 Avant (4F5, C6) 3.2 FSI quattro 3.2 FSI quattro 2005-2008 3123 255 188
AUDI A8 (4E_) 3.2 FSI 3.2 FSI 2005-2010 3123 260 191
AUDI A8 (4E_) 3.2 FSI quattro 3.2 FSI quattro 2005-2010 3123 260 191

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