Karlyn 331 Spark Plug Wire Set

Brand	Karlyn 331
Boot Type	Oem
Color	Black
Engine	Oem
Product line	Karlyn-STI
Fits	Volvo · 21 vehicles

OEM boot type. Direct-fit spark plug wire set with an OEM-style boot design.

Black finish. Clean, understated look for the ignition system.

Spark plug wire set. A complete ignition wire solution for replacing worn wires.

$39.71Free shipping

In stock · usually ships same day before 1pm CST

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Karlyn-STI 331 Spark Plug Wire Set

The Karlyn 331 spark plug wire set is an OE-style ignition wire replacement built with black insulation and OEM boot type details. It is listed for Volvo 740, 760, 780, and 940 applications with a 22 in. coil lead and use with SAE type spark plugs.

Key Features

OE boot type for factory-style fitment
Black wire set for a clean engine bay appearance
OEM engine application listing
22 in. coil lead noted in fitment
Use with SAE type spark plugs
Fits Volvo 740, 760, 780, and 940 applications

Product Details

Karlyn-STI is the product line designation for this ignition wire set, indicating an OE-focused replacement option within the Karlyn catalog. Part number 331 is specified for select Volvo 740, 760, 780, and 940 models, including 1988-1992 Volvo 740, 1988-1990 Volvo 760, 1989-1991 Volvo 780, and 1991 and 1993-1995 Volvo 940 configurations. The fitment notes call out a 22 in. coil lead, SAE type spark plugs, and The Shell application detail, making this a direct-reference choice for owners servicing the ignition system on these vehicles.

This part cross-references no listed interchange numbers in the provided data.

Common Issues It May Address

Misfires caused by worn or deteriorated plug wires
Hard starting related to weak ignition transfer
Rough idle from inconsistent spark delivery
Engine hesitation under load
Voltage leakage from aging insulation

Installation Notes and Tips

Verify engine configuration and coil lead length before installation.
Match the wire routing to the original layout to avoid crossfire and heat exposure.
Confirm the vehicle uses SAE type spark plugs as listed in the fitment notes.
Inspect distributor cap, rotor, and spark plugs during service for best ignition system results.

Quality Assurance

This Karlyn-STI ignition wire set is built to OE-style specifications for the listed Volvo applications and uses OEM boot type construction with black insulation for a factory-oriented replacement.

This part fits 21 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Submodel	Liters	Cylinders	Position	Notes
1995	Volvo	940	Base	—	—	N/A	w/22 in. Coil Lead; Use w/SAE Type Spark Plugs; w/The Shell; Karlyn-STI
1995	Volvo	940	T	—	—	N/A	w/22 in. Coil Lead; Use w/SAE Type Spark Plugs; w/The Shell; Karlyn-STI
1994	Volvo	940	Base	—	—	N/A	w/22 in. Coil Lead; Use w/SAE Type Spark Plugs; w/The Shell; Karlyn-STI
1994	Volvo	940	T	—	—	N/A	w/22 in. Coil Lead; Use w/SAE Type Spark Plugs; w/The Shell; Karlyn-STI
1993	Volvo	940	T	—	—	N/A	w/22 in. Coil Lead; Use w/SAE Type Spark Plugs; w/The Shell; Karlyn-STI
1992	Volvo	740	Base	—	—	N/A	w/22 in. Coil Lead; Use w/SAE Type Spark Plugs; w/The Shell; Karlyn-STI
1992	Volvo	740	T	—	—	N/A	w/22 in. Coil Lead; Use w/SAE Type Spark Plugs; w/The Shell; Karlyn-STI
1991	Volvo	740	Base	—	—	N/A	w/22 in. Coil Lead; Use w/SAE Type Spark Plugs; w/The Shell; Karlyn-STI
1991	Volvo	740	T	—	—	N/A	w/22 in. Coil Lead; Use w/SAE Type Spark Plugs; w/The Shell; Karlyn-STI
1991	Volvo	780	—	—	—	N/A	w/22 in. Coil Lead; Use w/SAE Type Spark Plugs; w/The Shell; Karlyn-STI
1991	Volvo	940	—	—	—	N/A	w/22 in. Coil Lead; Use w/SAE Type Spark Plugs; w/The Shell; Karlyn-STI
1990	Volvo	740	—	—	—	N/A	w/22 in. Coil Lead; Use w/SAE Type Spark Plugs; w/The Shell; Karlyn-STI
1990	Volvo	760	Base	2.3L	L4	N/A	w/22 in. Coil Lead; Use w/SAE Type Spark Plugs; w/The Shell; Karlyn-STI
1990	Volvo	780	—	2.3L	L4	N/A	w/22 in. Coil Lead; Use w/SAE Type Spark Plugs; w/The Shell; Karlyn-STI
1989	Volvo	740	GL	—	—	N/A	w/22 in. Coil Lead; Use w/SAE Type Spark Plugs; w/The Shell; Karlyn-STI
1989	Volvo	740	Base	—	—	N/A	w/22 in. Coil Lead; Use w/SAE Type Spark Plugs; w/The Shell; Karlyn-STI
1989	Volvo	740	GLE	—	—	N/A	w/22 in. Coil Lead; Use w/SAE Type Spark Plugs; w/The Shell; Karlyn-STI
1989	Volvo	760	Base	2.3L	L4	N/A	w/22 in. Coil Lead; Use w/SAE Type Spark Plugs; w/The Shell; Karlyn-STI
1989	Volvo	780	—	2.3L	L4	N/A	w/22 in. Coil Lead; Use w/SAE Type Spark Plugs; w/The Shell; Karlyn-STI
1988	Volvo	740	—	—	—	N/A	w/22 in. Coil Lead; Use w/SAE Type Spark Plugs; w/The Shell; Karlyn-STI
1988	Volvo	760	—	2.3L	L4	N/A	w/22 in. Coil Lead; Use w/SAE Type Spark Plugs; w/The Shell; Karlyn-STI
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