DENSO U-Groove Spark Plug: OE Performance, K20PR-U11, 3121
In stock
$4.99
Listed as compatible with this vehicle by the retailer feed.
Check price1999 Mitsubishi Galant Spark Plugs
5 products listed for this model year in the retailer catalog. Check engine and trim details before ordering.
Champion Copper Plus Spark Plug RC10YC4 - Dependable Performance & Durability, 346
In stock
$5.49
Listed as compatible with this vehicle by the retailer feed.
Check price
DENSO Double Platinum Spark Plug: OE Performance, lasts 60K+ Miles, PK20PR11, 3168
In stock
$14.49
Listed as compatible with this vehicle by the retailer feed.
Check price
NGK Laser Iridium Spark Plug (IFR6E11): Fine Wire Tip for Precision, 6741
In stock
$22.99
Listed as compatible with this vehicle by the retailer feed.
Check price
NGK Laser Platinum Spark Plug (PFR6G-11): Superior Ignitability & Longevity, 5555
In stock
$23.99
Listed as compatible with this vehicle by the retailer feed.
Check price
This site contains affiliate links. We may earn a commission if you buy through them. We do not sell these products or guarantee merchant inventory. Compatibility is listed by the retailer feed for this vehicle; it is not an OEM confirmation. Catalog snapshot: Aug 15, 2026.