NGK V-Power Spark Plugs (8) for 2001-2007 Sierra 2500HD 8.1

NGK V-Power Spark Plugs (8) for 2001-2007 Sierra 2500HD 8.1NGK TR55 8P S2HD0107 81 Qty: 8 plugs Replace your old stock spark plugs today for better gas mileage!! Economical performance and improved ignitability over standard NGK Spark Plugs original equipment manufacturer and race approved. Advantages: Lower ignition system voltage requirements Greater ignitability and performance over conventional spark plugs. "Trivalent Metal Plating" has superior anti corrosion and anti seizing properties. Increased fuel

For Nissan / Infiniti / Subaru with 12 x 1

Increased fuel economy and liower emissions

Accurate view fuel pressures between 0-100 psi

When you upgrade your B16 engine with high performance parts

The Russell stainless braided brake hoses reduce expansion for improved braking and offer firmer pedal feel

while the AL6061 radius arms are anodized

Socket Size(s) : 3/8 12pt

NGK-TR55-8P-CANY0912-53

NGK-BKR7EIX-11-6P-XG3500205-35

1/4˝ wide

After countless designs and 3d prints later

it has a 60 degree tapering on the wheel end