Spark Plugs

[volvostud]

I have a package of plugs left over from my S60 that I never installed. These are Volvo 31312691 plugs (5 of them) they are marked a FK20HQR10 plug. Can I get a 6th one and run them in my 2010 xc70T6? dimensions all look correct as does resistance. Not sure on gap.

[pgill]

Yes you can use those


FK20HQR10 is a Twin Tip Denso Iridium Plug

It is very similar to the 4704 IKH20TT

The difference is that the VOLVO Plug is a Super Ignition Plug and it has a slightly larger diameter for the Iridium Tip 0.55 mm vs 0.40 mm


I would happily use these in my 3.2


Here is a JPEG that I created for myself to understand the differences

Denso.jpg (124.93 KiB) Viewed 583 times

3421 is what came stock in my LR2 (IRIDIUM LONG LIFE Single tip 0.7 mm)

5344 this is what I upgraded to and used for the last 50,000 miles (IRIDIUM POWER Single Tip 0.4mm)

3459 This is the Super Ignition (Volvo Switched to this) This is a Twin Tip Iridium Plug [Twin Tip 0.55mm]

4704 This is the Iridium Twin Tip from Denso [Twin Tip 0.4mm]


I would use any of these and since you have 3459 x 5 I would just buy one more 3459 or get one 4704 and put them in


Good luck

Paul

[volvostud]

Thanks Paul!