A-Premium Double Iridium Spark Plug Pack of 6 — Lexus IS/GS/RC Compatibility
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Description
xPremium ignition for selected Lexus models
The A-Premium Double Iridium Spark Plug Pack of 6 is engineered to fit a broad lineup of Lexus engines, including IS250, IS300, IS350, GS300, GS350, GS450h, RC300, and RC350. With a robust iridium center electrode paired to a platinum core, these plugs are designed to support reliable ignition and steady performance across daily driving and longer trips.
Key features at a glance
- Reference numbers: 6858, DFH6B11A, XP5325, AI5325, 1UXP18110, BY483DFH6B
- Center electrode: Iridium; Core material: Platinum
- Electrical resistance: 5000 ohms
- Gap size: 0.039" to 0.043"
- Thread diameter: 14 mm; Hex size: 5/8"
- Insulator height: 50.50 mm; Reach: 26.5 mm
Why these specifications matter
- Iridium tips are known for durability, supporting consistent spark delivery over many miles.
- Platinum core enhances conductivity and stability under varying engine temperatures.
- A defined gap (0.039"–0.043") helps streamline installation across compatible engines.
Longevity and real-world use
Engineered for longevity, these plugs pair premium materials with precise manufacturing. For many drivers, replacement around 80,000–100,000 miles is suggested to maintain smooth ignition and reliable starts under typical road conditions. While outcomes depend on conditions, the combination of iridium and platinum aims to support steady performance across a wide range of driving scenarios.
What you get and how to use
- Six replacement plugs, each with a pre-set gap for quick, installation-ready service.
- A plug designed to fit multiple Lexus models listed in the fitment data and reference numbers.
For best results, verify model compatibility before installation, use the correct torque during mounting, and follow routine maintenance intervals recommended for your vehicle. This product is intended to support reliable ignition and steady engine response under everyday driving and longer trips alike.
Note: These statements reflect product features and typical usage scenarios, not guaranteed results. Individual performance may vary based on vehicle condition and driving conditions.
FAQ
Q: Is this spark plug compatible with my Lexus model?
A: Yes. It fits multiple Lexus models listed, and the plugs have a pre-set gap for easier installation.
Q: How often should replacement occur?
A: Consider replacement around 80,000–100,000 miles for sustained performance.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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