Specifications
- Brand
- NGK
- Part #
- 6509

NGK Iridium IX Spark Plug Box of 4 (LTR6IX-11)
Box of 4
Sold as a complete box
Per Unit
$9.03
Box of 4 Total
$36.10
$36.10
for box of 4Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.
NGK Iridium IX Spark Plug Box of 4 (LTR6IX-11). Fine iridium tip ensures a durable and consistent spark.
Key Features
- Fits 53+ vehicle make/model combinations.
- The fine iridium center electrode is six times harder than platinum for improved durability.
- Trivalent metal plating offers superior anti-corrosion and anti-seizing properties.
- Tapered cut ground electrode helps with starting, idling, and throttle response.
- Designed for high-temperature engines, providing outstanding acceleration and fuel efficiency.
- Box includes four Iridium IX spark plugs.
Product Details
The fine iridium center electrode on these NGK Iridium IX spark plugs is six times harder than platinum, offering exceptional durability and a consistent spark. This advanced material choice is perfect for today's high-temperature engines, helping to improve acceleration and fuel efficiency. These plugs are a solid option for modified or high-performance applications, or simply as an upgrade over standard nickel alloy plugs.
NGK uses a trivalent metal plating on the plug body, which helps prevent corrosion and seizing, making installation and removal easier down the road. The tapered cut ground electrode is designed to improve starting, idling, and throttle response. This box contains four spark plugs, suitable for many common V6 and V8 engine configurations found across a wide range of vehicles like the Chevrolet Traverse, Ford F-150, and Cadillac CTS.
Specifications
- Brand
- NGK
- Manufacturer Part #
- 6509
Frequently Asked Questions
NGK Iridium IX Spark Plug Box of 4 (LTR6IX-11)
