Ignition

Billet Spark Plug Gapper Tool - 14mm - BMS

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T#:583132

Part#: BMSBSPGT14MM

Ships in 8 Business Days

$ 35.00 USD

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$ 35.00 USD

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BMS Billet Spark Plug Gapper Tool - 14mm is an essential tool for achieving accurate and consistent spark plug gapping, ideal for automotive enthusiasts and professional mechanics alike. This precision tool helps maintain optimal plug performance by providing reliable, consistent gaps. Available in both 14mm and 12mm plug thread sizes, this tool is proudly made in the USA to deliver durability and precision.

Precisely gaps spark plugs for enhanced engine performance and efficiency
Speeds up the gapping process while ensuring accuracy and uniformity
Available in two sizes (14mm and 12mm) for a wider range of compatibility
Optional specialty feeler gauge included with 4 blades in thicknesses of .018, .020, .022, and .024
Made in the USA for premium quality and durability

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Blue B58 BMW Coil Upgrade Adapter Kit - N55

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T#:49857415

Part#: BMSN55CUAK

Back Ordered

$ 199.00 USD

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$ 199.00 USD

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Upgrade your N55 ignition system with the N55 → B58 Coil Upgrade Adapter Kit, engineered for a seamless, plug-and-play conversion. This kit lets you run modern B58-style pencil coils on your N55 without modifying the factory harness or compromising valve cover integrity. Why Upgrade: While the N55 is a reliable platform, factory coils can struggle under high boost, heat, and load. B58 coils deliver stronger, more consistent spark, and this adapter kit ensures a clean, OEM-quality integration. Features & Benefits: Direct-fit adapter harness & mounts for straightforward B58 coil installation Plug-and-play design — no cutting, splicing, or permanent modifications Secure coil seating & alignment for consistent performance and reliability Improved ignition stability under high-load or tuned conditions, helping reduce misfires Applications: Stage 1–3 N55 builds, turbo upgrades, ethanol blends, track use, and aggressive daily driving Drivers looking to eliminate heat- and boost-related ignition issues Anyone seeking an OEM+ quality coil upgrade without a messy DIY install Result: A clean, professional installation that modernizes your ignition system and delivers reliable spark performance under all conditions. If you provide the kit’s brand/part number and whether your valve cover is stock or aftermarket, I can refine this description for precise fitment and application.

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Red B58 BMW Coil Upgrade Adapter Kit - N55

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T#:57086690

Part#: BMSN55CUAK-R

Ships on Nov 17, 2026

$ 199.00 USD

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$ 199.00 USD

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Upgrade your N55 ignition system with the N55 → B58 Coil Upgrade Adapter Kit, engineered for a seamless, plug-and-play conversion. This kit lets you run modern B58-style pencil coils on your N55 without modifying the factory harness or compromising valve cover integrity.

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Ignition Wire Set

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T#:593964

Part#: 12121705718

Ships in 2 Business Days

$ 108.48

This product was last offered at the strikethrough price on
10-27-2026

$ 94.10 USD

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$ 94.10 USD

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Replacement Ignition Wire Set from STI-Karlyn

Karlyn Ignition Wire Set - Left - E31

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T#:373953

Part#: 12121733006

Ships in 2 Business Days

$ 330.33

This product was last offered at the strikethrough price on
10-27-2026

$ 287.83 USD

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$ 287.83 USD

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For cylinders 7-12

Ignition Wire Set

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T#:593968

Part#: 12121705716

Ships in 2 Business Days

$ 127.57

This product was last offered at the strikethrough price on
10-27-2026

$ 110.66 USD

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$ 110.66 USD

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If your vehicle has developed a misfire or is having ignition problems it could be the ignition cables. Replace yours today to bring back the functionality of your ignition system.

Karlyn Ignition Wire Set - Right - E31

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T#:373952

Part#: 12121733020

Ships in 2 Business Days

$ 329.65

This product was last offered at the strikethrough price on
10-27-2026

$ 287.23 USD

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$ 287.23 USD

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For cylinders 1-6

Spark Plug Wire Set

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T#:593963

Part#: 12120407854

Ships in 2 Business Days

$ 101.63

This product was last offered at the strikethrough price on
10-27-2026

$ 98.52 USD

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$ 98.52 USD

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Replacement Spark Plug Wire Set from STI-Karyln

Spark Plug Wire Set With Long Coil Wire

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T#:593961

Part#: 12121360603

Ships in 2 Business Days

$ 51.62

This product was last offered at the strikethrough price on
10-27-2026

$ 44.77 USD

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$ 44.77 USD

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Replacement Spark Plug Wire Set With Long Coil Wire from STI Karlyn

Karlyn Ignition Wire Set - E36, Z3

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T#:369621

Part#: 12121247523

Ships in 1-2 days

$ 181.99 USD

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$ 181.99 USD

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Replace worn out wires and restore performance.

Karlyn Ignition Wire Set - E30 M3

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T#:381414

Part#: 12121311735

Ships in 7 Business Days

$ 249.99 USD

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$ 249.99 USD

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Complete set of plug wires

Blue B58 BMW Coil Upgrade Adapter Kit - N54

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T#:49857414

Part#: BMSN54CUAK

Ships on Nov 17, 2026

$ 199.00 USD

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$ 199.00 USD

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Modernize your N54 ignition system with this N54 to B58 Coil Upgrade Adapter Kit, engineered to deliver an OEM-quality conversion for improved spark energy and consistency. Designed to pair B58-style pencil coils with the factory N54 engine harness, this kit provides a clean, reversible installation—no cutting, splicing, or guesswork required. Key Features & Benefits: Direct-fit adapter solution to run B58 coils on N54 applications Plug-and-play wiring integrates with the factory N54 harness for a factory-like install Secure coil positioning helps ensure proper seating and reliable long-term fitment Improved ignition stability under higher cylinder pressures—ideal for tuned, higher-boost setups Clean, serviceable conversion that maintains a tidy engine bay and simplifies future maintenance Ideal For: Stock to heavily modified N54 builds Vehicles running elevated boost, ethanol blends, or upgraded turbo systems Owners looking to reduce ignition-related misfires and improve combustion consistency under load If you share the brand/part number of the kit and which coils you’re pairing it with, I can tailor the write-up to match the exact components and fitment notes.

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Ignition Wire Set

Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:593956

Part#: 12121279550

Ships in 2 Business Days

$ 102.55

This product was last offered at the strikethrough price on
10-27-2026

$ 71.16 USD

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$ 71.16 USD

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Keep your ignition system in prime shape with this set of spark plug wires from ECS Tuning. These replacement wires offer a perfect fit and performance match for your worn original equipment. Installs just like stock with stock lengths. An easy way to try to squeeze all the mileage you can out of each tank of gas.

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Ignition Wire Set

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T#:593966

Part#: 12121742887

Ships in 2 Business Days

$ 251.08

This product was last offered at the strikethrough price on
10-27-2026

$ 218.78 USD

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$ 218.78 USD

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Installs just like stock with stock lengths. An easy way to try to squeeze all the mileage you can out of each tank of gas.

Ignition Wire Set

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T#:593965

Part#: 12121722253

Ships in 2 Business Days

$ 557.24

This product was last offered at the strikethrough price on
10-19-2026

$ 483.34 USD

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$ 483.34 USD

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Complete OEM style with plastic loom to keep wires nice & neat. Keep your ignition system in prime shape with this set of spark plug wires from ECS Tuning. These replacement wires from Bosch offer a perfect fit and performance match for your worn original equipment. Installs just like stock with stock lengths. An easy way to try to squeeze all the mileage you can out of each tank of gas.

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Ignition Wire Set

Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:593967

Part#: 12121742888

Ships in 2 Business Days

$ 252.91

This product was last offered at the strikethrough price on
10-27-2026

$ 220.36 USD

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$ 220.36 USD

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These replacement wires from STI offer a perfect fit and performance match for your worn original equipment. Installs just like stock with stock lengths. An easy way to try to squeeze all the mileage you can out of each tank of gas.

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Billet Spark Plug Gapper Tool - 14mm - BMS

Blue B58 BMW Coil Upgrade Adapter Kit - N55

Red B58 BMW Coil Upgrade Adapter Kit - N55

Ignition Wire Set

Karlyn Ignition Wire Set - Left - E31

Ignition Wire Set

Karlyn Ignition Wire Set - Right - E31

Spark Plug Wire Set

Spark Plug Wire Set With Long Coil Wire

Karlyn Ignition Wire Set - E36, Z3

Karlyn Ignition Wire Set - E30 M3

Blue B58 BMW Coil Upgrade Adapter Kit - N54

Ignition Wire Set

Ignition Wire Set

Ignition Wire Set

Ignition Wire Set

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