Cadillac 1940s Spark Plugs (2024-2026) - Parts, Prices & Buying Guide

Find quality spark plugs for your Cadillac 1940s (2024-2026). Browse 20 available listings with prices starting around $108.74. Reduced emissions.

20 listings available | Prices from $10.03 to $1200.76|19 verified sellers

54 Results

Spark Plugs

Found 54 listings for "cadillac 1940s spark plugs"

3x NOS Goodyear 14 spark plugs 1940s 10mm Packard Cadillac

3x NOS Goodyear 14 spark plugs 1940s 10mm Packard Cadillac

A$24.67AUD
New other (see details)📍 US
+ A$34.61 shipping
Seller: queencityvintageltd
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Lot of 4 Champion Y-6 Spark Plugs 1930s 1940s Packard Chevrolet Buick Cadillac

Lot of 4 Champion Y-6 Spark Plugs 1930s 1940s Packard Chevrolet Buick Cadillac

A$59.20AUD
New📍 US
+ A$68.27 shipping
Seller: coalchamber998
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5 x Volvo NGK Iridium IX Spark Plugs 2.5L / T5 R C30 C70 S40 S60 Repl: 30650379

5 x Volvo NGK Iridium IX Spark Plugs 2.5L / T5 R C30 C70 S40 S60 Repl: 30650379

A$97.47AUD
New📍 US
+ A$28.15 shipping
Seller: autopartssupplygroup
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Spark Plug

Spark Plug

A$1200.76AUD
New📍 US
+ A$58.04 shipping
Seller: premiumshocks
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( 1 ) .. ‘NOS’ AC-84 Spark Plug .. 18mm Threads .. Circa 1940’s .. Made in USA

( 1 ) .. ‘NOS’ AC-84 Spark Plug .. 18mm Threads .. Circa 1940’s .. Made in USA

A$47.70AUD
New other (see details)📍 US
+ A$47.49 shipping
Seller: sweetventidk1989
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6 Spark Plugs 1937-1950 Oldsmobile Six 215 230 238 , 37 38 39 40 41 42 46 47 50

6 Spark Plugs 1937-1950 Oldsmobile Six 215 230 238 , 37 38 39 40 41 42 46 47 50

A$29.61AUD
New📍 US
+ A$39.64 shipping
Seller: kfparts
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6 * Genuine IRIDIUM SPARK PLUGS IKH20TT For Volvo C30,C70,S40,S60,S80

6 * Genuine IRIDIUM SPARK PLUGS IKH20TT For Volvo C30,C70,S40,S60,S80

A$43.52AUD
Brand New📍 AU
Free shipping
Seller: 4567dongl
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6 * Genuine IRIDIUM SPARK PLUGS IKH20TT For Volvo C30,C70,S40,S60,S80

6 * Genuine IRIDIUM SPARK PLUGS IKH20TT For Volvo C30,C70,S40,S60,S80

A$51.81AUD
Brand New📍 AU
Free shipping
Seller: tabo8008
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Champion 844 H10C SE Spark Plugs, 1939-53 Fits Ford Flathead, Set of 8

Champion 844 H10C SE Spark Plugs, 1939-53 Fits Ford Flathead, Set of 8

A$57.57AUD
New📍 US
+ A$48.30 shipping
Seller: runinbrave
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6 Spark Plugs 1938 1939 1940 Chevrolet 38 39 40 CHEVY 216 ci 6-cylinder

6 Spark Plugs 1938 1939 1940 Chevrolet 38 39 40 CHEVY 216 ci 6-cylinder

A$31.25AUD
New📍 US
+ A$39.68 shipping
Seller: kfparts
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6 * Genuine IRIDIUM SPARK PLUGS IKH20TT For Volvo C30,C70,S40,S60,S80

6 * Genuine IRIDIUM SPARK PLUGS IKH20TT For Volvo C30,C70,S40,S60,S80

A$53.85AUD
Brand New📍 AU
Free shipping
Seller: zhxihail
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Spark Plug

Spark Plug

A$10.03AUD
New📍 US
+ A$21.02 shipping
Seller: quickpickap
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6 * Genuine IRIDIUM SPARK PLUGS IKH20TT For Volvo C30,C70,S40,S60,S80

6 * Genuine IRIDIUM SPARK PLUGS IKH20TT For Volvo C30,C70,S40,S60,S80

A$53.69AUD
Brand New📍 AU
Free shipping
Seller: lansheng
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For Volvo C30 C70 S40 S60 V50 V70 XC70 Spark Plug Set Original 30751806

For Volvo C30 C70 S40 S60 V50 V70 XC70 Spark Plug Set Original 30751806

A$144.28AUD
New📍 CN
Free shipping
Seller: jdok7427
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Spark Plug

Spark Plug

A$39.46AUD
New📍 US
+ A$21.88 shipping
Seller: parteazy1
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Spark Plug

Spark Plug

A$39.66AUD
New📍 US
+ A$21.89 shipping
Seller: firstclass_autoparts
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Genuine OEM ACDelco GM Spark Plugs 19382850 R45XLS

Genuine OEM ACDelco GM Spark Plugs 19382850 R45XLS

A$45.32AUD
New📍 US
+ A$38.72 shipping
Seller: sunftirea-0
View on eBay
6 * Genuine IRIDIUM SPARK PLUGS IKH20TT For Volvo C30,C70,S40,S60,S80

6 * Genuine IRIDIUM SPARK PLUGS IKH20TT For Volvo C30,C70,S40,S60,S80

A$51.84AUD
Brand New📍 AU
Free shipping
Seller: donglin668
View on eBay
6 * Genuine IRIDIUM SPARK PLUGS IKH20TT For Volvo C30,C70,S40,S60,S80

6 * Genuine IRIDIUM SPARK PLUGS IKH20TT For Volvo C30,C70,S40,S60,S80

A$44.32AUD
Brand New📍 AU
Free shipping
Seller: ef99dl
View on eBay
6 * Genuine IRIDIUM SPARK PLUGS IKH20TT For Volvo C30,C70,S40,S60,S80

6 * Genuine IRIDIUM SPARK PLUGS IKH20TT For Volvo C30,C70,S40,S60,S80

A$48.88AUD
Brand New📍 AU
Free shipping
Seller: 6789dl
View on eBay

About Cadillac 1940s Spark Plugs Parts

Ensure reliable ignition with quality spark plugs for your Cadillac 1940s. Spark plugs ignite the air-fuel mixture in your engine cylinders. Replace them according to your vehicle's maintenance schedule for optimal performance and fuel economy.

Why Shop Spark Plugs for Cadillac 1940s?

  • Genuine OEM and high-quality aftermarket options available
  • Competitive pricing from verified eBay sellers
  • Fast shipping options with buyer protection
  • Easy returns and seller ratings for peace of mind

Buying Tips for Cadillac 1940s Spark Plugs

OEM vs Aftermarket

For your Cadillac 1940s, OEM parts guarantee exact fit and function. Quality aftermarket options often provide equivalent performance at lower cost.

Type Selection

Spark Plugs are available in Copper, Platinum, Double platinum options. Choose based on your driving style and budget.

Know When to Replace

Watch for these signs: Rough idle, Misfires, Poor acceleration. Early replacement prevents more expensive repairs.

Parts Availability

As an American manufacturer, parts are widely available from both OEM and aftermarket suppliers across North America.

Technical Information

Modern iridium and platinum plugs offer extended service life compared to traditional copper plugs.

Available Types

  • Copper
  • Platinum
  • Double platinum
  • Iridium

Key Benefits

  • Improved fuel efficiency
  • Smoother idle
  • Better acceleration
  • Reduced emissions

Warning Signs to Watch For

  • Rough idle
  • Misfires
  • Poor acceleration
  • Increased fuel consumption
  • Hard starting

Recommended Replacement Interval

Copper: 30,000 miles, Platinum: 60,000 miles, Iridium: 100,000 miles

Installation Information

Difficulty: Moderate
Estimated Time: 1-2 hours
DIY Friendly: Yes

This is a good DIY project for most skill levels.

Installation time may vary for Cadillac 1940s based on engine bay layout and accessibility.

Frequently Asked Questions

How do I find the right spark plugs for my Cadillac 1940s?

Verify compatibility using your Cadillac 1940s's VIN number, production year (2024-2026), and engine code. Check seller compatibility charts and cross-reference OEM part numbers when possible.

How often should I replace spark plugs on my Cadillac 1940s?

General guideline: Copper: 30,000 miles, Platinum: 60,000 miles, Iridium: 100,000 miles. However, driving conditions (city vs highway, climate, towing) affect replacement frequency. Inspect regularly and replace when warning signs appear.

Should I use OEM or aftermarket spark plugs for my Cadillac 1940s?

OEM parts guarantee exact Cadillac specifications and fitment. Quality aftermarket brands often meet or exceed OEM standards at lower prices. For warranty vehicles, check if aftermarket parts affect coverage.

What are signs that my Cadillac 1940s needs new spark plugs?

Common warning signs include: Rough idle, Misfires, Poor acceleration, Increased fuel consumption, Hard starting. If you notice any of these symptoms, inspect or replace the spark plugs promptly to prevent further damage.

Can I install spark plugs on my Cadillac 1940s myself?

Yes, this is typically a moderate DIY job taking 1-2 hours. Always consult your owner's manual and follow proper safety procedures.