When do spark plug wires need to be replaced?

The lifespan of spark plug wires varies based on factors including the climate and driving habits, but they generally last about 60,000-100,00 miles. Periodic replacement helps maintain the engine’s performance.

What are signs spark plug wires should be replaced?

Common signs of wear can include a rough-running engine, possible misfires and even hard starting. Acceleration can be affected and fuel economy can decline. Visually, cracks or fraying of the wires are signs replacement is needed.

Are all spark plug wires the same?

No. Material composition and design can vary widely, resulting in varying levels of conductivity, durability and electrical interference suppression. GM Genuine Parts and ACDelco Gold Spark Plug Wires meet GM factory specifications.

Do battery cables need to be replaced often?

Generally, battery cables don't need periodic replacement, but they are subject to corrosion and other forces of wear that can affect their performance. This is especially true in climates of high humidity, where the roads are salted in the winter.

What are signs of the battery cables need to be replaced?

If loose connections are ruled out, hard starting, a failure to start and other intermittent electrical issues are common signs the battery cables should be checked for corrosion and other signs of wear.

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ACDelco Professional 9748HH Spark Plug Wire Set, 8 count (Pack of 1)

ACDelco Professional 9748HH Spark Plug Wire Set, 8 count (Pack of 1)

Product ID: 348568798

Details

Brand
ACDelco
Connector type
Spark Plug
Item dimensions L x W x H
9.7 x 25.4 x
Item weight
1.12 Pounds
Material
Fiberglass

⚡8 high-performance spark plug wires

📏Optimized wire length & diameter for max spark delivery

🛡️Water-tight distributor boot seal & corrosion-resistant terminals

Description

⚡ Ignite your drive with OE-grade spark power!

OE VALIDATED QUALITY - Backed by GM standards, trusted for fit, form, and function across multiple vehicle models.
WATER TIGHT DISTRIBUTOR BOOT - Ensures a secure, moisture-proof fit that protects your engine’s spark system.
CORROSION RESISTANT TERMINALS - Durable terminals that resist rust and simplify installation for long-lasting performance.
FIBERGLASS REINFORCED DURABILITY - Robust fiberglass material ensures resilience under extreme engine conditions.
PRECISION ENGINEERED SPARK DELIVERY - Maximize ignition efficiency with perfectly sized wires for consistent power.

The ACDelco Professional 9748HH Spark Plug Wire Set features 8 fiberglass-reinforced wires engineered for optimal length and diameter to deliver maximum spark efficiency. Designed with water-tight distributor boots and corrosion-resistant terminals, this set ensures reliable ignition performance and durability. Backed by GM Original Equipment standards, it offers a trusted fit and function for a wide range of vehicles, making it a smart upgrade for professional-grade engine maintenance.

Specifications

ASIN	B000S2QVYE
Best Sellers Rank	#40,312 in Automotive ( See Top 100 in Automotive ) #212 in Automotive Performance Spark Plugs
Brand	ACDelco
Brand Name	ACDelco
Connector Type	Spark Plug Connector
Connector type	Spark Plug Connector
Customer Reviews	4.7 out of 5 stars 2,524 Reviews
EU Spare Part Availability Duration	7 Years
Global Trade Identification Number	00707773322116
Item Dimensions	9.7 x 25.4 x 15.2 centimeters
Item Weight	1.12 Pounds
Item dimensions L x W x H	9.7 x 25.4 x 15.2 centimeters
Item weight	1.12 Pounds
Manufacturer	ACDELCO
Material	Fiberglass
Material Type	Fiberglass
Model	9748HH
Number of Items	1
Number of Packs	1
Part Number	88862385
UPC	707773322116

Reviews

M**S

Didn't fit my 2011 q56

Waste of time and money

10.09.2023

X**C

OEM

Quality, OEM wires. I didn't know if my truck took these, or the shorter wires. Turns out it takes the shorter one, however these also fit with only an inch of slack. So it doesn't look messy or out of place. TBH, I doubt most people would even know. I'd say if you don't know which set you need, the long or the short, just get these and you'll be fine with them. My truck is a 2007, so it's on its last legs anyway.

15.02.2026

M**S

easy peasy

installed these on my 2005 GMC Sierra 1500 with the 5.3. The old original wires were a massive pain to get off, but these new wires went on easily and the truck runs great again.

12.08.2025

A**O

Es un producto original

De bastante calidad

15.05.2026

F**E

Nice fitment fast shipping

Perfect fitment for my 2007 Chevy Suburban 5.3L No issues no problems fast shipping

8.09.2026

F**R

Delco quality is hard to beat, these wires are actual Delco that I received

Delco quality is hard to beat, worth the extra money to buy OEM quality instead of buying cheap junk you need to replaced twice as much Only thing these plug wires are a bit longer compared to the factory OEM Delco wires I removed for my 2500 Chev

27.04.2023

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