Spark Plug Wire Heat Shield Sleeve Protection 2500 High Temp Heat Tape Protect 8-Pack (Black)

Eight boots, eight sleeves, no cutting and no measuring. This pack is sized for a set of ignition leads on an eight-cylinder engine — slip one over each plug boot, work it down, and the boot nearest the manifold stops being the one that always fails first.

Pre-cut for boots rather than sold by the metre

Each sleeve is stitched at the wide end and ringed at the narrow end. The wide end goes over the boot first, then the ringed end is eased down over the part the boot connects to, which holds everything in place instead of letting the sleeve ride up the lead. According to the supplier the shape suits straight boots as well as the 45 and 90 degree boots common on transverse and V engines. Eight in the pack, in black.

Three temperature figures in one supplier listing

Here is where the source falls apart, and it is worth reading before buying. The product title says 2500. The body text repeats that figure as an intermittent limit of 2500 degrees, without ever naming a unit. Elsewhere in the very same description, fibreglass is given a temperature resistance of around 1000 degrees Fahrenheit, and a basalt sleeve is credited with around 1500 degrees Fahrenheit. Three separate figures, two materials, no consistent basis. All of them are reproduced below exactly as written and none is converted. None is treated here as the product's rating.

What the material actually is

Fibreglass is named as the material in one line, a double-layer structure is described in another, and a third refers to a basalt sleeve — apparently carried across from a different listing. Fibreglass is what the supplier states for this item and is what the specification records. The stated purpose is straightforward: keep exhaust heat off plug boots and lead jackets so they do not burn through, harden or crack, because a cracked boot is a misfire waiting to happen.

Specifications

• Quantity: 8 sleeves
• Colour: black
• Material, as stated: fibreglass
• Construction: double layer, per the supplier
• Figure in the product title: 2500
• Figure repeated in the body text: an intermittent limit of 2500 degrees, unit not stated
• Other figures in the same description: around 1000 degrees Fahrenheit for fibreglass; around 1500 degrees Fahrenheit for a basalt sleeve
• Continuous working temperature: not published
• Length, internal diameter and boot sizes accepted: not published

Before you fit them

• No temperature figure here can be relied on as this product's rating. The title figure carries no unit, the description contradicts itself twice, and no standard or test is named. Nothing has been converted, for exactly that reason.
• The supplier claims no fire rating for these sleeves, and none is asserted on its behalf.
• With no internal diameter or length published, check the sleeves against your own boots when they arrive, before committing to a full set.
• Fit with the engine cold, and make sure nothing sits against a moving part once the leads go back on.

Eight sleeves, straight onto the boots, with the supplier's numbers laid out exactly as it wrote them.

Products received faulty, damaged, or not as described are eligible for a return, refund, or replacement in accordance with local consumer laws. We are committed to ensuring all products meet the standards of quality and reliability expected by our customers. Please note that we do not accept returns or provide refunds for change of mind. We encourage you to carefully consider your purchase to ensure it meets your needs and expectations.

Delivery Timeframe：Please note that we cannot guarantee the exact date of arrival, and the delivery timeframes (excluding weekends and public holidays) are as follows:

For customers in Victoria, approximately 7-10 working days;

For customers in NSW, SA, ACT, and QLD, approximately 9-12 working days;

For customers in WA, NT, and TAS, approximately 9-12 working days.