Ignition for BMW E21 320i M10 1.8L

Clear BMW chassis

Please ensure your correct model is selected

Your BMW's ignition system is critical for smooth engine operation. This category contains parts used in the BMW ignition system, including spark plugs, ignition coils, spark plug wires and boots, ignition rotors and caps, distributors and distributor caps. On most 1991 and later model BMWs, your car has what's known as a coil-on-plug system, where each cylinder has its own ignition coil that sits directly atop the spark plug (so you won't have spark plug wires on those BMWs.) A fresh set of spark plugs is an essential part of any BMW engine tune up.

Sub-Categories

Sort By:

Bav Auto Spark Plug Socket 12" x 5/8"
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bav Auto Tools - Corporate Logo
T#:580385
Part#: B8800072
In Stock
Sale - Save 20% $ 37.99

This product was last offered at the strikethrough price on
05-03-2026

$ 30.39 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 37.99

This product was last offered at the strikethrough price on
05-03-2026

$ 30.39 USD
Free Shipping on orders $49 and up
Magnetic insert holds the spark plug securely in place for easy installation. Works great on many twin can engines where the spark plugs are recessed deep in the cylinder head.
Schwaben Extended 5/8" Spark Plug Socket
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Schwaben - Corporate Logo
T#:367321
Part#: S-3858-125
In Stock
Sale - Save 20% $ 25.99

This product was last offered at the strikethrough price on
05-02-2026

$ 20.79 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 25.99

This product was last offered at the strikethrough price on
05-02-2026

$ 20.79 USD
Free Shipping on orders $49 and up

The Schwaben Extended Reach Spark Plug Socket is the perfect tool for removing 5/8-inch spark plugs with deeply recessed plugs.

The five inch long, rigid socket body provides solid engagement with the plug hex to prevent plug breakage.

Features:

  • Magnetic ring holds the spark plug but won't stick to the plug porcelain neck like sockets with cheap rubber inserts
  • Chrome plated with durable and attractive polished surface
  • Turn it with a 3/8-inch ratchet or a 19 mm (¾-inch) socket or box wrench at the external hex head
  • Outer diameter of socket is approximately 22mm
Show More Show Less
Genuine BMW Blank key - E12, E28, E21 320i, E30, E23, E24
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:88580
Part#: 51211900892
In Stock
$ 68.18 USD
Free Shipping on orders $49 and up


Genuine BMW General Key (Blank) - Code* 10001
This item fits the following BMW Chassis:
E30 M3,E30


Spark Plug Socket 16MM 12 Point Swivel
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
CTA Tools - Corporate Logo
T#:640924
Part#: CTA4329
In Stock
$ 24.28 USD
Free Shipping on orders $49 and up
Swivel Spark Plug Socket 16MM

Titan Swivel Spark Plug Socket Extension
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Titan - Corporate Logo
T#:797051
Part#: TIT62161
In Stock
$ 25.99 USD
Free Shipping on orders $49 and up
Knurled shaft for better grip
7mm Ignition Wire Set - 1602/1800/2002/2002tii 1968-76, E21 320i 1977...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Kingsborne - Corporate Logo
T#:4021
Part#: 12-7405
In Stock
Sale - Save 9% $ 84.99

This product was last offered at the strikethrough price on
05-03-2026

$ 77.61 USD
Free Shipping on orders $49 and up
Sale - Save 9%
$ 84.99

This product was last offered at the strikethrough price on
05-03-2026

$ 77.61 USD
Free Shipping on orders $49 and up
The Turner Motorsport High-Performance Ignition Wire Sets are manufactured to O.E. specifications and with O.E components. All wire sets have genuine BERU connectors, and the highest grade of silicone wire we could find. Short/Long Coil.

This item fits the following BMWs:
1968-1976 2002 BMW 1600 2002 2002tii
1977-1979 E21 BMW 320i
Show More Show Less

8mm High-Performance Ignition Wire Set - E21 320i 1980-83, E30 318i 1...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Kingsborne - Corporate Logo
T#:4023
Part#: TMS4023
In Stock
$ 88.99 USD
Free Shipping on orders $49 and up
High-Performance spark plug wires, to help deliver a perfect, uninterrupted spark impulse to each cylinder of your BMW's engine. Old wires will impair spark, reduce performance, and cause cylinder misfires. We recommend changing your ignition wires every 50k miles, or as soon as your wires show signs of deteriation.

This item fits the following BMWs:
1980-1983 E21 BMW 320i
1984-1985 E30 BMW 318i
Show More Show Less
Billet Spark Plug Gapper Tool - 14mm - BMS
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Burger Motorsports - Corporate Logo
T#:583132
Part#: BMSBSPGT14MM
Ships in 8 Business Days
$ 35.00 USD
Free Shipping on orders $49 and up

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
Show More Show Less

3/8" Dr. 5/8" Extended Spark Plug Socket
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Performance Tool - Corporate Logo
T#:2242226
Part#: W80533
Ships in 2 Business Days
$ 20.25 USD
Free Shipping on orders $49 and up
Extended socket length reaches confined areas.

Spark Plug Wire Set With Long Coil Wire
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Karlyn - Corporate Logo
T#:593961
Part#: 12121360603
In Stock at Vendor
$ 49.98 USD
Free Shipping on orders $49 and up
Replacement Spark Plug Wire Set With Long Coil Wire from STI Karlyn
Bosch Ignition Rotor - E21
For vehicles with a production date with a production date up to 09/1979
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:372454
Part#: 12111360305
Ships in 1-2 days
$ 21.69 USD
Free Shipping on orders $49 and up
$ 21.69 USD
Free Shipping on orders $49 and up
Works in conjunction with ignition points to generate spark
Genuine BMW Distributor Cap - E21 320i E30 318i M10
For vehicles with production date from 09/1979
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:537182
Part#: 12111706113
Ships in 3 Business Days
4% off MSRP $ 46.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 44.99 USD
Free Shipping on orders $49 and up
4% off MSRP
$ 46.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 44.99 USD
Free Shipping on orders $49 and up


Extended Spark Plug Socket
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Sunex - Corporate Logo
T#:391150
Part#: SUU884506
Ships in 8 Business Days
$ 20.99 USD
Free Shipping on orders $49 and up
3/8" drive socket with 5/8" opening for most spark plugs
Genuine BMW Ignition Wire - 12121705675 - E30,E34,E36,E38
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:22397
Part#: 12121705675
Back Ordered
$ 28.99 USD
Free Shipping on orders $49 and up


Genuine BMW Ignition Wire
This item fits the following BMW Chassis:
E30 M3,E34 M5,E30,E34,E36,E38

Genuine BMW Spark Plug Service Indicator Label - BMW
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:362838
Part#: 01399791390
In Stock
$ 3.61 USD
Free Shipping on orders $49 and up
Stick this label in a conspicuous place to act as a reminder of your service history. Documenting when your BMW's sparks plugs have been swapped helps you keep track of vital maintenance!

Combination Feeler Gauge/Spark Plug Gapping Tool
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Gear Wrench - Corporate Logo
T#:587003
Part#: KDT164
In Stock
$ 18.99

This product was last offered at the strikethrough price on
12-09-2025

$ 10.99 USD
Free Shipping on orders $49 and up
$ 10.99 USD
Free Shipping on orders $49 and up
Gauge and accurately alter the gap of your spark plugs.

Spark Plug
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:589000
Part#: 12121276283
In Stock
$ 4.99 USD
Free Shipping on orders $49 and up
9-Wire Spark Plug Gap Gauge
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
CTA Tools - Corporate Logo
T#:641657
Part#: CTA3238
In Stock
$ 3.99 USD
Free Shipping on orders $49 and up
Always check gap on your new spark plugs

Bremi Spark Plug Boot - E21, E23, E24, E28, E30, E32, E34
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bremi - Corporate Logo
T#:375432
Part#: 12121289821
In Stock
20% off MSRP $ 9.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 7.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
20% off MSRP
$ 9.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 7.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
This is the rubber boot that goes over the plug end of the wires
Spark Plug Gap Gauge
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Performance Tool - Corporate Logo
T#:1855998
Part#: W80535
Ships in 3 Business Days
$ 1.99 USD
Free Shipping on orders $49 and up
Easy to read markings to set gaps quickly and easily.

OEM Bosch Ignition Rotor - 12111272144 - E21 320i (09/1979+), E30 318...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:19218
Part#: 12111272144
In Stock at Vendor
$ 17.99

This product was last offered at the strikethrough price on
04-10-2026

$ 16.99 USD
Free Shipping on orders $49 and up
$ 16.99 USD
Free Shipping on orders $49 and up

Bosch Distrubutor rotor for E30 M3. This distributor rotor replaces BMW#12111312157 used on BMW S14 engines. Made by Bosch, the original equipment manufacturer. We recommend replacing matching distributor cap at the same time.


ROTOR 12111272144 Manufactured by Bremi
 

 

Show More Show Less

Wire Type Spark Plug Gapper .040 to .080
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Lisle - Corporate Logo
T#:641655
Part#: LIS67900
Ships in 2 Business Days
$ 4.99 USD
Free Shipping on orders $49 and up
Always check gap on your new spark plugs
Genuine BMW O-Ring - 12118530508 - E30
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:7097
Part#: 12118530508
Ships in 3 Business Days
$ 4.99 USD
Free Shipping on orders $49 and up


Genuine BMW O-Ring -

This item fits the following BMW Chassis:
E30

Fits BMW Engines including:
M10,M30,N51

Bosch Spark Plug - W8DC - 2002, 7-series 1975-79, E21 320i
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:339071
Part#: W8DC
Ships in 3 Business Days
Starting at $ 19.96 USD
Free Shipping on orders $49 and up
Starting at $ 19.96 USD
Free Shipping on orders $49 and up
High-quality Bosch ignition components keep your car running in tip-top shape.

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their exacting assembly process and high level of durability you can expect a long service life from all Bosch products.

This part fits the following BMWs:
1976 - 1989 E24 630CSi 633CSi 
1977 - 1986 E23 733i
1975 - 1983 E21 320i 
1972 - 1984 E12 528i 530i 
1968 - 1977 E3 3.0Si 
Show More Show Less


Genuine BMW Ignition Contact Set (Points) - E10 E3
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:19215
Part#: 12111267393
Ships in 6 Business Days
7% off MSRP $ 13.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 13.00 USD
Free Shipping on orders $49 and up
7% off MSRP
$ 13.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 13.00 USD
Free Shipping on orders $49 and up


Genuine BMW ENGINE ELECTRICAL REPAIR KIT CONTACT BREAKER

Fits BMW Engines including:
M10,M30

Victor Reinz Distributor O-Ring - E12, E21, E23, E24, E3, E30 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Victor Reinz - Corporate Logo
T#:362181
Part#: 12118530508
Ships in 4 Business Days
$ 2.03 USD
Free Shipping on orders $49 and up
Seal at bottom of distributor shaft
CTA Tools - Spark Plug Gapper
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
CTA Tools - Corporate Logo
T#:641654
Part#: CTA3235
In Stock
$ 1.99 USD
Free Shipping on orders $49 and up

CTA Tools - Spark Plug Gapper is an essential tool for accurately setting and measuring spark plug gaps, ensuring optimal engine performance. This precision tool is designed for both professional and DIY mechanics, providing reliable gap adjustments for a variety of engine applications.

  • Versatile Measurement Range: The ramp gauge measures gaps from .020 to .100 inches (0.50 to 2.5 mm), accommodating a wide range of spark plug specifications.
  • Precision Engineering: Engineered to deliver accurate gap settings, improving engine efficiency and performance.
  • Made in the USA: Crafted with high-quality materials to ensure durability and long-lasting performance.
  • Easy to Use: Simple design makes gap adjustments quick and straightforward, enhancing convenience in any workshop or garage setting.

Upgrade your toolset with the CTA Tools - Spark Plug Gapper to achieve precise spark plug gaps and optimize your engine’s performance.

Show More Show Less