Are these made for square or round coils ?

The coil connection is a round rubber boot that goes over the ceramic protrusion of the coil and the electrode wire goes inside the coil. The coil boot is not square but round! Which was the case with my 2004 GMC Sierra.

Will these fit a 2002 Chevy Avalanche 5.3?

They should fit your 02 Chevy 5.3. I installed them on my 05 Chevy 5,3 and they fit perfectly.

Will these fit a 2006 gmc sierra 1500

i got a chevy with a 6.0 2004 and they fit great so i would say yes they are almost the same

Will these fit 2016 silverado 5.3l

They will fit .the wires are a little longer than the ac delco ones. On the passenger side the furthest away might have to make an adjustment to the heat shield. Check my pictures of my engine.

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JDMSPEED High Performance Spark Plug Ignition Wire for 2000-2009 Chevy GMC V8

JDMSPEED High Performance Spark Plug Ignition Wire for 2000-2009 Chevy GMC V8

4.6/5

Product ID: 250112917

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Details

Brand
JDMSPEED
Material
Rfi
Item weight
0.45 Kilograms
Cable type
spark plug
Connector type
Boot

⚡10.2mm Spiral Wound Design

🔥Ultra High Temp Silicone Boots

🛡️UltraLow Resistance KEVLAR Core

Description

⚡ Ignite your V8’s true potential with JDMSPEED’s high-performance spark plug wires!

KEVLAR CORE DURABILITY - UltraLow resistance KEVLAR core guarantees long-lasting ignition reliability under extreme conditions.
TANGLE FREE INSTALLATION - Designed for hassle-free setup with tangle-free wires, saving you time and frustration.
ONE YEAR WARRANTY ASSURANCE - Backed by a one-year warranty, ensuring confidence and peace of mind with every drive.
PRECISION SPIRAL WOUND POWER - 10.2mm spiral wound wire ensures optimal spark delivery for peak engine performance.
HEAT RESISTANT SILICONE PROTECTION - High-temp silicone boots and sleeves shield wires from heat and wear, extending lifespan.

JDMSPEED High Performance Spark Plug Ignition Wires feature a 10.2mm spiral wound design with an ultra-low resistance KEVLAR core and heat-resistant silicone boots, engineered specifically for 2000-2009 Chevy GMC V8 engines. These tangle-free wires come with a one-year warranty, delivering reliable ignition and enhanced engine efficiency.

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TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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¥17026

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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Manufacturer	JDMSPEED
Part number	D071
Item Weight	450 g
Package Dimensions	27.6 x 24.6 x 7 cm; 450 g
Item model number	D071
Material	Rfi
Shape	Round
Item Package Quantity	8
Special Features	Tangle Free
Batteries included?	No
Batteries Required?	No

JDMSPEED High Performance Spark Plug Ignition Wire for 2000-2009 Chevy GMC V8

Details

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