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Conventional Spark Plug
Authorized Dealer
Special Offer
Buy 4, Get 5% Off
4 for $0.00•Save $0.00
Conventional Spark Plug
BrandGM Genuine PartsLearn More
Qty/Vehicle4
ConditionNew
Includes: (1) Spark Plug, Hardware
$000
•In Stock•Fast Shipping1
Estimated Delivery by calculating...
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Product Specifications
Features & Benefits
- •Direct OE fit - no modifications needed
- •Meets or exceeds manufacturer specs
- •24-month warranty included
- •Fast Shipping — ships same day before 3 PM ET
BrandGM Genuine Parts
Part NumberR45S
Part TypeSpark Plug
ConditionNew
Qty Per Vehicle4
Center Electrode Core MaterialCopper
Compatibility
Vehicle Compatibility
Guaranteed to fit 0 vehicles from Infinity--Infinity
No compatibility data available
Frequently Asked Questions
We're always here to help. If you can't find your answer, ask Rydon - our AI assistant will help you out.
What vehicles does this Spark Plug fit?
This GM Genuine Parts Spark Plug (Part #R45S) fits specific vehicles. Use the compatibility checker on this page to verify fitment for your vehicle.
Is this an OEM or aftermarket part?
This is a premium aftermarket Spark Plug by GM Genuine Parts, designed to meet or exceed OEM specifications with strict quality control standards.
What warranty is included?
This GM Genuine Parts Spark Plug is backed by a 24-month limited warranty covering defects in materials and workmanship from date of purchase.
How long does shipping take?
Fast shipping — orders before 3 PM ET ship the same day. Most arrive within 3-5 business days.
Can I return this if it does not fit?
30-day money-back guarantee. Return unused parts in original packaging for full refund.
Compatibility
Vehicle Compatibility
Guaranteed to fit 0 vehicles from Infinity--Infinity
No compatibility data available
Product Specifications
Brand
GM Genuine Parts
Part Type
Spark Plug
Center Electrode Tip Material
Nickel Alloy
Ground Electrode Core Material
Nickel
Part Number
R45S
Center Electrode Core Material
Copper
Grade Type
Regular
Hex Type
Hex
Center Electrode Core MaterialCopper
Center Electrode Tip MaterialNickel Alloy
Grade TypeRegular
Ground Electrode Core MaterialNickel
Hex TypeHex
Insulator MaterialES703
Length (In)4.1 in
Resistor TypeYes
Seat TypeFlat
Thread Diameter (In)0.55 in
Thread Diameter (Mm)14 mm
Washer TypeCrush
Washer(S) IncludedYes
Center Electrode DesignStandard
Faq - Answer 1Yes, this interval depends on what type of spark plug your vehicle requires. Refer to your owner's manual or contact your vehicle's manufacturer for more information.
Faq - Answer 2Yes, if it is the scheduled time for spark plug replacement.
Faq - Answer 3Yes. Diesel engines require glow plugs because diesel engines operate differently than gas engines. ACDelco Professional Glow Plugs are specially designed to give diesel engines the heat they need for
Faq - Answer 4Yes. When ACDelco spark plugs are manufactured, they are pre-gapped to the correct gap specification.
Faq - Answer 5Not always, but you should inspect your spark plug wires for wear when replacing your spark plugs. Refer to your vehicle owner's manual or contact the manufacturer for more information.
Faq - Answer 6Yes, pre-ignition can cause serious damage to your engine. Pre-ignition is the ignition of fuel before the actual spark occurs, which causes a rapid temperature rise in the combustion chamber that can
Faq - Answer 7No, cleaning your old spark plugs is not recommended. Dirty, fouled spark plugs may also have broken or chipped insulator tips, worn electrodes, or worn or missing side wires. These conditions severel
Faq - Answer 8Yes, ACDelco has marine spark plugs for many applications.
Faq - Question 1Is there a recommended interval for changing my vehicle's spark plugs?
Faq - Question 2Should I change all of my vehicle's spark plugs at the same time?
Faq - Question 3Does a diesel engine require a different type of plug than a gas engine?
Faq - Question 4Are ACDelco spark plugs pre-gapped?
Faq - Question 5When I replace my spark plugs, should I also replace my spark plug wires?
Faq - Question 6What is pre-ignition and can it damage my engine?
Faq - Question 7Can I just clean my spark plugs instead of replacing them?
Faq - Question 8Does ACDelco have marine spark plugs?
Features Benefits - Bullet 1Black Onyx coating helps reduce corrosion
Features Benefits - Bullet 2Copper core provides great heat transfer and helps maximize plug durability
Features Benefits - Bullet 3Available for use in Marine applications
Features Benefits - Bullet 4Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
Features Benefits - Bullet 5Premium aftermarket replacement part
Features Benefits - Bullet 6Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models
Ground ConfigurationStandard
Ground Electrode Quantity1
Ground Electrode Tip DesignStandard
Height (In)1.1 in
Hex Size20.62 MM
Hex Size (In)13/16 in
Insulator Height62.97 MM
Manufacturer Heat Range5
Pre-Gap Size0.04 IN
Product DescriptionACDelco Gold (Professional) Conventional Spark Plugs are a high quality alternative to Original Equipment (OE) parts. These conventional spark plugs are designed for reliability and efficient performa
Reach0.37 IN
Signs Of Wear Troubleshooting - Section 1 - Bullet 1Your engine having trouble starting, hesitating, or cutting out
Signs Of Wear Troubleshooting - Section 1 - Bullet 2Engine misfire
Signs Of Wear Troubleshooting - Section 1 - Bullet 3Sluggish engine performance, loss of engine power, or decreased fuel economy
Signs Of Wear Troubleshooting - Section 1 - Bullet 4Lack of acceleration or loss of speed when driving uphill under load
Signs Of Wear Troubleshooting - Section 1 - Bullet 5Cracks in the upper or lower portion of the spark plug insulator
Signs Of Wear Troubleshooting - Section 1 - Bullet 6Chipped or broken insulator tips
Signs Of Wear Troubleshooting - Section 1 - HeaderSigns of wear for spark plugs include but are not limited to:
Weight (Lb)0.48 lb
Width (In)3.5 in
Check if this fitsShop worry-free by verifying fitment first. If the part doesn't fit, we'll make it right or refund you. Learn more
Main Image
Click to expand
Conventional Spark Plug
Authorized Dealer
Special Offer
Buy 4, Get 5% Off
4 for $0.00•Save $0.00
Call for Price
888-477-2530Our parts specialists are ready to help you find the best price.
Part #:R45S
OE REPLACEMENT
Conventional Spark Plug
|
Part #:R45S
|
Spark Plug
Call for Price
888-477-2530Our parts specialists are ready to help you find the best price.
Quantity:
1
In Stock·10 or more available
Fast delivery between Mon, Jun 22 to Mon, Jun 22
Ships To:Key Features
OEM-Equivalent QualityMeets/exceeds factory specs
American BusinessMaryland since 1986
24-Month WarrantyLimited coverage on every part
Fast Same Day ShippingWe ship all orders the same business day before cutoff
Product Specs
BrandGM Genuine Parts
Part NumberR45S
Part TypeSpark Plug
ConditionNew
Center Electrode Core MaterialCopper
Center Electrode Tip MaterialNickel Alloy
Grade TypeRegular
Ground Electrode Core MaterialNickel
Compatibility
Vehicle Compatibility
Guaranteed to fit 0 vehicles from Infinity--Infinity
No compatibility data available
Questions & Answers
This GM Genuine Parts Spark Plug (Part #R45S) fits specific vehicles. Use the compatibility checker on this page to verify fitment for your vehicle.
This is a premium aftermarket Spark Plug by GM Genuine Parts, designed to meet or exceed OEM specifications with strict quality control standards.
This GM Genuine Parts Spark Plug is backed by a 24-month limited warranty covering defects in materials and workmanship from date of purchase.
Fast shipping — orders before 3 PM ET ship the same day. Most arrive within 3-5 business days.
30-day money-back guarantee. Return unused parts in original packaging for full refund.
Have a Question?
Ask Marvin, our Car Expert
Offline
Things to Know
About This Spark Plug
This GM Genuine Parts automotive component is engineered to meet or exceed OEM specifications for reliable performance and long service life.
Key Features
- Meets or exceeds OEM specifications
- Direct-fit replacement design
- Rigorously tested for durability
- Professional-grade construction
- Backed by manufacturer warranty
Signs This Part Needs Replacement
- •Unusual noises from the component area
- •Decreased vehicle performance
- •Warning lights on dashboard
- •Visible wear or damage
- •Failed vehicle inspection
GM Genuine Parts
Trusted Automotive Brand
GM Genuine Parts is a trusted manufacturer of quality automotive parts.
View all GM Genuine Parts productsInstallation Guide
Moderate
1-3 hours
Tools Needed
Basic hand toolsTorque wrenchVehicle service manual
Frequently Asked Questions
WARNING: Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which are known to the State of California to cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information see www.P65Warnings.ca.gov/motor-vehicle-parts