Name: ACDelco R42XLS Conventional Spark Plug
SKU: r42xls
Price: 2.8 USD
Availability: InStock

ACDELCO part description

SPARK PLUG

Product Description

Spark Plug

Product Attributes

Pre-Gap Size	0.04 IN
Weight (lb)	0.4 lb
Thread Diameter	0.55 IN
Reach	0.75 IN
Pre-Gap Size	0.89 MM
Ground Electrode Quantity	1
Height (in)	1.12 in
Manufacturer Heat Range	2
Width (in)	3.59 in
Length (In)	4.16 IN
Hex Size (in)	13/16 IN
Thread Diameter	14 MM
Reach	19.05 MM
Features & Benefits - Bullet 7	ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
Good Maintenance Practices - Section 1 - Bullet 5	Apply dielectric grease into the boot area to reduce the chance of exterior tracking on the buttress tower of the spark plug. This grease also promotes a good heat transfer between the spark terminal screw and boot terminal.
FAQ - Question 4	Are ACDelco spark plugs pre-gapped?
Features & Benefits - Bullet 5	Available for use in Marine applications
Good Maintenance Practices - Section 1 - Bullet 6	Before installing new spark plugs, use a gap guide to make sure your new spark plugs have the correct gap. NOTE: ACDelco Professional Iridium Spark Plugs are pre-gapped during manufacturing. Never attempt to gap an ACDelco Professional Iridium Spark Plug. You could damage the spark plug. Replace any incorrectly gapped ACDelco Professional Iridium Spark Plugs with plugs that are correctly gapped.
Features & Benefits - Bullet 1	Black Onyx coating helps reduce corrosion
Good Maintenance Practices - Section 1 - Bullet 2	Brush or air blast dirt away from the well areas before removing spark plugs. CAUTION: Use goggles to protect eyes from debris when applying compressed air to spark plug wells.
FAQ - Question 7	Can I just clean my spark plugs instead of replacing them?
Signs of Wear & Troubleshooting - Section 1 - Bullet 5	Chipped or broken insulator tips
Center Electrode Core Material	Copper
Features & Benefits - Bullet 2	Copper core provides great heat transfer and helps maximize plug durability
Signs of Wear & Troubleshooting - Section 1 - Bullet 4	Cracks in the upper or lower portion of the spark plug insulator
Signs of Wear & Troubleshooting - Section 1 - Bullet 6	Damaged spark plug boots
FAQ - Question 3	Does a diesel engine require a different type of plug than a gas engine?
FAQ - Question 8	Does ACDelco have marine spark plugs?
Seat Type	Gasket
Features & Benefits - Bullet 8	GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
Features & Benefits - Bullet 9	GM regularly updates production and service part designs to integrate new materials and technologies
Good Maintenance Practices - Section 1 - Bullet 1	Grasp the spark plug boot and gently rotate it 90 degrees counterclockwise. Pull the spark plug boot and cable away from the spark plug. If necessary, use a spark plug boot removing tool. DO NOT grab or violently pull spark plug cables.
Good Maintenance Practices - Section 1 - Bullet 7	Install spark plugs or glow plugs to the proper torque per the manufacturers' specification.
FAQ - Question 1	Is there a recommended interval for changing my vehicle's spark plugs?
Signs of Wear & Troubleshooting - Section 1 - Bullet 3	Lack of acceleration or loss of speed when driving uphill under load
Center Electrode Tip Material	Nickel Alloy
Ground Electrode Core Material	Nickel
Features & Benefits - Bullet 4	Nickel-chrome alloy sheathing helps prevent corrosion on center electrode
FAQ - Answer 7	No, 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 severely affect spark plug performance. Replace your dirty, fouled spark plugs with new ACDelco spark plugs.
FAQ - Answer 5	Not 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.
Good Maintenance Practices - Section 1 - Bullet 4	Remove each spark plug and place each one in a tray by cylinder number. This will help identify and relate any unusual condition to the cylinder involved.
Features & Benefits - Bullet 3	Ribbed suppressor seal extends resistance and helps prevent spark 'flash over' and misfires
FAQ - Question 2	Should I change all of my vehicle's spark plugs at the same time?
Signs of Wear & Troubleshooting - Section 1 - Header	Signs of wear for spark plugs include but are not limited to:
Signs of Wear & Troubleshooting - Section 1 - Bullet 2	Sluggish engine performance, loss of engine power, or decreased fuel economy
Features & Benefits - Bullet 6	Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
Good Maintenance Practices - Section 1 - Bullet 3	Use the correct deep socket size to loosen each spark plug one or two turns. NOTE: To remove spark plugs from aluminum heads, allow the engine to cool. The heat of the engine, in combination with a spark plug that is still hot, may cause the spark plug threads to strip the cylinder head upon removal.
Good Maintenance Practices - Section 1 - Header	Visually inspect spark plugs for signs of wear. Follow these steps for removing spark plugs for inspection, servicing or replacement:
FAQ - Question 6	What is pre-ignition and can it damage my engine?
FAQ - Question 5	When I replace my spark plugs, should I also replace my spark plug wires?
Resistor Type	Yes
FAQ - Answer 8	Yes, ACDelco has marine spark plugs for many applications.
FAQ - Answer 2	Yes, if it is the scheduled time for spark plug replacement. It is okay to replace one spark plug if it is fouled or damaged prior to scheduled maintenance, provided the source of the damage is found and corrected.
FAQ - Answer 6	Yes, 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 damage engine components and melt spark plug electrodes. Causes of pre-ignition include but are not limited to a buildup of deposits that can become incandescent in the combustion chamber, improper installation torque being applied to spark plugs, and having spark plugs with a heat range that is too hot for the engine's operating condition.
FAQ - Answer 1	Yes, 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 3	Yes. 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 their cold starts. Refer to your owner's manual or contact your vehicle's manufacturer for more information.
FAQ - Answer 4	Yes. When ACDelco spark plugs are manufactured, they are pre-gapped to the correct gap specification.
Signs of Wear & Troubleshooting - Section 1 - Bullet 1	Your engine having trouble starting, hesitating, or cutting out
Product Description	ACDelco GM Original Equipment Conventional Spark Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These Conventional Spark Plugs are designed for reliability and efficient performance, and are a high quality replacement for many vehicles on the road today. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance. They are also available for Marine applications. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco GM Original Equipment parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional. ⚠<b> WARNING:</b> Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Additional Information

Warranty Special	7 Years/Unlimited Miles Limited Warranty (Parts Only). Please see ACDelco.com for more details\|84 Months/Unlimited Kilometers Limited Warranty (Parts Only). Please see ACDelcocanada.com for more details
Harmonized Tariff Code (HTS)	8511100000
Country of Origin (Primary)	CN
Country of Origin 2	MX
Warranty Special UOM	TX
UPC	00808709586517

Fits Vehicles

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Lotus Seven (1962-1975)
Lotus Europa (1967-1975)
Lotus Elan (1962-1975)
Lotus Super Seven (1963-1968)
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Mazda 1500 (1967-1970)
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Audi 5000 (1978-1988)
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Audi 100 Series (1969-1977)
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Dodge Colt (1971-1992)
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Dodge D50 (1979-1982)
Dodge Conquest (1984-1986)
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Chrysler Daytona (1993)
Chrysler Conquest (1987-1989)
Lamborghini 350GT (1964-1967)
Lamborghini Jarama (1970-1976)
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Lamborghini Islero (1968-1970)
Lamborghini 400GT (1966-1968)
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Isuzu Amigo (1989)
Hyundai Elantra (1992-1995)
Hyundai Scoupe (1991-1992)
Hyundai Sonata (1989-1998)
Hyundai Excel (1986-1994)
BMW 2500 (1968-1971)
BMW 3.0CSL (1971)
BMW Bavaria (1972-1974)
BMW 3.0S (1971-1974)
BMW 3.0CSi (1971-1974)
BMW 3.0CS (1971-1974)
BMW 2800CS (1968-1971)
BMW 2800 (1968-1974)
BMW 2000cs (1965-1966)
BMW 2000c (1965)
BMW 2.8 Bavaria (1971)
BMW 3.0Si (1971)
Peugeot 404 (1963-1970)
Peugeot 304 (1971-1972)
Peugeot 505 (1985-1991)
Peugeot 504 (1969-1978)
Renault Caravelle (1963)
Renault R18i (1983)
Renault R17 (1975, 1978-1979)
Renault R15 (1974-1976)
Renault R12 (1975-1977)
Renault Fuego (1982-1983)
Renault Encore (1985-1986)
Renault Alliance (1985-1987)
Opel Rallye (1968)
Opel Kadett (1968)
Porsche 968 (1992-1993, 1995)
Porsche 944 (1985-1991)
Porsche 928 (1984-1988, 1993-1995)
Porsche 924 (1977-1982, 1988)
Porsche 914 (1970-1974)
Porsche 911 (1980-1988)
Jaguar XJ (1968-1971)
Daihatsu Charade (1989)
Suzuki Swift (1989-1997)
Alfa Romeo Spider (1969-1974)
Alfa Romeo Montreal (1971-1975)
Alfa Romeo Giulietta (1954-1958, 1962-1963)
Alfa Romeo GTZ (1964)
Alfa Romeo GTC (1964)
Alfa Romeo Giulia (1962-1963, 1966)
Alfa Romeo 2600 (1962-1968)
Alfa Romeo GTV (1965)
Alfa Romeo GT Veloce (1969-1974)
Alfa Romeo Giulia Sprint (1962, 1966)
Alfa Romeo Duetto 1600 (1966)
Alfa Romeo Berlina (1969-1974)
Yugo GVX (1987-1988)
Yugo GVS (1988)
Yugo GVL (1988)
Yugo GV (1988)
Triumph TR6 (1968-1976)
Triumph 2000 (1967)
Triumph TR250 (1967-1969)
Triumph GT6 (1967)
Subaru XT (1985-1991)
Subaru Standard (1976-1987)
Subaru RX (1985-1989)
Subaru Loyale (1990-1994)
Subaru Justy (1987-1995)
Subaru GLF (1980-1982)
Subaru GL-10 (1985-1989)
Subaru GL (1972-1975, 1979-1989)
Subaru GF (1975-1979)
Subaru FE (1979)
Subaru DL (1973-1989)
Subaru Brat (1978-1987)
Subaru 1400 (1973-1974)
Subaru Deluxe (1972-1973)
Subaru Star (1970-1972)
Morgan 4/4 Series V (1967-1968)
Morgan Plus Four (1963-1974)
Morgan Plus 8 (1968-1974, 1976-1996, 2002-2003)
Morgan 4/4 (1968-1974, 1980-1981)
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Austin Healey Sprite (1958-1970)
Suzuki SA310 (1985)
Suzuki Forsa (1985-1988)
Rover 2000 (1963-1973)
Rover 3500 (1980)

A true OEM auto parts brand for GM and non-GM vehicles, ACDelco® offers a wide portfolio of parts designed to keep vehicles on the road longer. These parts work precisely and fit perfectly because they are designed, engineered, tested, and backed by General Motors. But ACDelco also carries aftermarket components that go through the same 18-step quality approval process as the OE parts. Whether customers choose OE or aftermarket, they’d get the same reliable performance, precise engineering, and superior reliability for years to come. ACDelco’s expansive product portfolio includes alternators, filters, batteries, brakes, belts and hoses, oil and fluids, and suspension parts. These products are made to meet GM and non-GM vehicles’ ever-evolving powertrain, collision, maintenance, and repair needs.