RLP Silicone Spark Plug Wires Set 8.0mm Black – Replacement for Chevy/GMC Small Block HEI (265-400)
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Description
xRLP Silicone Spark Plug Wires: High-Performance Ignition Leads
The RLP Silicone Spark Plug Wires Set is designed to deliver precise ignition pulses by guiding the high voltage from the distributor to the spark plugs. Built for demanding conditions, these wires aim to maintain consistent performance across long drives and varying temperatures without a drop in quality.
In daily driving, you may notice steadier engine response and smoother throttle transitions when ignition components stay resilient under heat, oil, and moisture. While individual results vary, the right wires can help support reliable ignition events and reduce interference with nearby electronics.
Key benefits at a glance
- Extremely high EMI/RFI suppression with very low resistance to help spark delivery.
- Conductor: spiral core; distributor boot material: silicone; heavy-duty 8.0 mm jacket protects theKevlar spiral wound core from heat, moisture, and chemicals.
- Premium construction: heat-resistant silicone boots, plus stainless steel and brass terminals for strong conductivity.
- Designed for Small Block Chevy and GMC HEI systems, including engines 265, 267, 283, 302, 305, 307, 327, 350, and 400.
- Notice: includes eight wires; coil wire not included; 90-degree boots at both ends for a snug fit and clean routing.
Compatibility and usage
These wires are tailored for HEI-equipped Small Block engines in Chevy and GMC lineups. The robust silicone jacket is engineered to resist heat, oil, and moisture, helping maintain a reliable ignition path in a variety of driving conditions.
Real-world scenarios include hot-weather commutes, highway cruising, and occasional spirited driving where consistent spark energy matters. While not a guarantee of performance, choosing high-quality ignition leads can contribute to smoother starts and steadier performance across sessions.
What’s in the box and warranty
- 8 spark plug wires (coil wire not included).
- 12-month warranty with free replacement or refund if a fault is found within coverage.
Tip: verify compatibility with your distributor type before purchase. This set is built for durable performance in HEI-enabled Small Block Chevy and GMC engines.
FAQ
Q: Which engines is this wire set compatible with?
A: Designed for Small Block Chevy and GMC engines with HEI distributors, including 265, 267, 283, 302, 305, 307, 327, 350 and 400.
Q: What’s included in the package and is there a warranty?
A: Eight spark plug wires are included; coil wire is not included. The set carries a 12-month warranty.
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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