HomeIgnition > Ignition Wire and Related ComponentsKarlyn 673 Spark Plug Wire Set
Part #: 673

Karlyn 673 Spark Plug Wire Set

Karlyn-STI
⚙️ 49 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Karlyn-STI
🚗Fitment: Subaru, Baja, Forester, Impreza, Legacy, and Outback
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Reliable Spark Plug Wire Set for Subaru Vehicles

The Karlyn-STI Spark Plug Wire Set 673 is designed to meet OEM specifications, ensuring consistent ignition performance for Subaru models including Baja, Forester, Impreza, Legacy, and Outback. Featuring OEM-style boots and a distinctive blue color, this set provides a direct replacement solution for ignition wire maintenance.

  • OEM boot type for secure and precise fitment
  • Blue color coding for easy identification
  • Compatible with Subaru Baja, Forester, Impreza, Legacy, and Outback
  • Engineered to OEM engine specifications
  • Part number 673 for accurate ordering and reference

About the Karlyn-STI Product Line

The Karlyn-STI line focuses on ignition components engineered to OEM standards, providing reliable performance and fitment for specific vehicle applications. This spark plug wire set 673 is part of the Karlyn-STI range, which emphasizes quality construction and compatibility with Subaru engines, ensuring proper ignition system function and durability.

Product Details and Specifications

This spark plug wire set features OEM-style boots designed to fit securely on the spark plugs and distributor or ignition coil terminals. The blue wires are manufactured to match OEM engine requirements, maintaining proper resistance and insulation for optimal ignition timing and spark delivery. The set is specifically compatible with Subaru models such as the Baja, Forester, Impreza, Legacy, and Outback, making it a suitable replacement for worn or damaged ignition wires.

Common Applications and Issues Addressed

  • Replacement of cracked or brittle spark plug wires
  • Resolving misfires caused by faulty ignition wiring
  • Improving engine starting and idle stability
  • Restoring proper spark delivery to cylinders
  • Maintaining OEM ignition system performance

Installation Notes and Tips

When installing the Karlyn-STI spark plug wire set 673, ensure that each wire is routed according to the vehicle’s factory specifications to avoid cross-firing or interference with other engine components. Confirm that the OEM-style boots are fully seated on both the spark plugs and ignition coil or distributor terminals. It is recommended to replace all wires in the set simultaneously to maintain balanced ignition performance.

Quality Assurance and Warranty

The Karlyn-STI spark plug wire set 673 is manufactured to meet OEM quality standards, ensuring durability and reliable performance. While specific warranty details are not provided, the product is designed to comply with original equipment specifications for Subaru ignition systems.

BrandKarlyn
Part Number673
PositionKarlyn-STI
Boot TypeOem
ColorBlue
EngineOem

This part fits 49 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersPositionNotes
2006SubaruBajaSportN/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2005SubaruBajaSportN/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2004SubaruBajaSportN/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2004SubaruForesterXN/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2004SubaruForesterXSN/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2004SubaruImprezaOutback2.5LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2004SubaruImprezaRS2.5LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2004SubaruImprezaTS2.5LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2004SubaruLegacy2.5LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Made On Or Before 2/28/2004; Karlyn-STI
2004SubaruOutbackLimited2.5LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Made On Or Before 2/28/2004; Karlyn-STI
2004SubaruOutbackBase2.5LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Made On Or Before 2/28/2004; Karlyn-STI
2003SubaruBajaN/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2003SubaruForesterN/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2003SubaruImprezaOutback2.5LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2003SubaruImprezaRS2.5LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2003SubaruImprezaTS2.5LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2003SubaruLegacyN/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2003SubaruOutbackLimited2.5LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2003SubaruOutbackBase2.5LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2002SubaruForesterN/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2002SubaruImprezaOutback2.5LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Made On Or Before 4/30/2002~Non H6; Karlyn-STI
2002SubaruImprezaRS2.5LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Made On Or Before 4/30/2002~Non H6; Karlyn-STI
2002SubaruImprezaTS2.5LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Made On Or Before 4/30/2002~Non H6; Karlyn-STI
2002SubaruLegacyN/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2002SubaruOutbackLimited2.5LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Non H6; Karlyn-STI
2002SubaruOutbackBase2.5LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Non H6; Karlyn-STI
2001SubaruForesterN/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2001SubaruImprezaL2.2LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2001SubaruImprezaOutback2.2LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2001SubaruImprezaRS2.5LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2001SubaruLegacyN/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2001SubaruOutbackLimited2.5LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Non H6; Karlyn-STI
2001SubaruOutbackBase2.5LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Non H6; Karlyn-STI
2000SubaruForesterN/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2000SubaruImprezaL2.2LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2000SubaruImprezaOutback2.2LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2000SubaruImprezaRS2.5LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2000SubaruLegacyN/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
2000SubaruOutbackN/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
1999SubaruForesterN/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
1999SubaruImprezaL2.2LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
1999SubaruImprezaOutback2.2LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
1999SubaruImprezaRS2.5LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
1999SubaruLegacyGT2.2LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
1999SubaruLegacyL2.2LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
1999SubaruLegacyBrighton2.2LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
1999SubaruLegacyL 30th Anniversary2.2LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
1999SubaruLegacyLimited 30th Anniversary2.2LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI
1999SubaruLegacySUS 30th Anniversary2.2LH4N/AUse In Conjunction w/Coil Pack PN[5098]; Karlyn-STI

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