Best Spark Plugs For Chevy 350: image
Editor's Pick

Bosch Double Iridium Spark Plugs are engineered to deliver 4X longer service life compared to standard copper firing pin and ground electrode. This is the first time that Bosch has used this type of spark plug technology in its production. The product’s performance was tested on a range of 15,000 km on one charge. It is also the first time that Bosch has used it in an electric car. The new plugs have been designed for use with older cars.

Best Budget

ACCEL Short Spark Plugs provide instant throttle response and better fuel economy. The plugs are designed to fit into tight spaces, making them ideal for use in cramped spaces. The plugs have a standard 5/8 socket and come in a pack of four. The short spark plugs can be installed on any flat surface without damaging the surface. The plugs weigh less than one kilowatt per cylinder (LPG) and deliver more power at high rpm. Notably, these plugs cost around

Honorable Mention

ACDelco Professional RAPIDFIRE Single Platinum Performance Spark Plugs are designed to meet the specifications for fit, form, and function. The spark plugs have a two-piece glass and brass seal to help prevent ignition problems. They also provide an improved plug to boot seal that helps reduce heat transfer. The spark plugs are made from high-quality stainless steel with no lead or nickel alloys. The product is available in black and white.

Best Spark Plugs For Chevy 350

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Top 10 Best Spark Plugs For Chevy 350

1

ACDelco Gold 14 RAPIDFIRE Spark Plug (Pack of 1)

223 ratings | 22 offers | 223 Reviews
Price: $3.18$20.95
Why we chose it
  • Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
  • Platinum on center electrode enables superior spark characteristics and can reduce voltage requirements of the ignition system
  • Solid state suppressor, with two-piece glass and brass seal, can help reduce radio frequency interference, regulates spark energy for long electrode life, and helps protect against high combustion pressures
  • Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models
  • Pure copper core provides great heat transfer and helps maximize plug durability
  • Ribless insulator helps optimize plug to boot seal
  • Premium aftermarket replacement part
ACDelco Gold 14 RAPIDFIRE Spark Plug (Pack of 1): image
90%
customers recommend this product
4.5/ 5
Mileage4.2
Value for money4.2
Longevity3.8
Top Pick
2
Why we chose it
  • 97 Ford E-250 Econoline, 04-11 Ford Focus, 04-07 Ford Freestar, 10-12 Ford Fusion, 97 Ford F-150, 94-04 Ford Mustang, 90-95,11 Ford Ranger, 10-13 Ford Transit Connect, 95-03 Ford Windstar, 10 Mazda B2300, 94-97 Mazda B4000, 91-94 Mazda Navajo
  • Fit type: Vehicle Specific
  • Original equipment, pre-gapped replacement delivering optimum fit, form and function
  • Double Iridium firing pin and ground electrode inlay provide 4X longer service life compared to standard copper plugs
  • 7 year performance satisfaction guarantee
  • 360 Degree continuous laser weld fuses corrosion resistant iridium firing pin to base for increased durability
  • 0.6mm fine wire firing pin provides superior ignitability and performance
  • 94-96 Chevrolet Caprice, 95-02 Chevrolet Cavalier, 92-96 Chevrolet Corvette, 94-96 Chevrolet Impala, 97-99 Chevrolet Malibu, 90-97 Ford Aerostar, 05-12 Ford Escape, 91-96 Ford Explorer, 97 Ford E-150 Econoline, 97 Ford E-150 Econoline Club Wagon
  • 95-01 Pontiac Grand Am, 95-02 Pontiac Sunfire
  • 94-96 Buick Commercial Chassis, 94-96 Buick Roadmaster, 95-98 Buick Skylark, 94-96 Cadillac Commercial Chassis, 95-99 Cadillac DeVille, 95-99 Cadillac Eldorado, 94-96 Cadillac Fleetwood, 95-99 Cadillac Seville, 93-97 Chevrolet Camaro
  • 05-06,08-11 Mazda Tribute, 04-05 Mazda 3, 06-07 Mazda 5, 03-05 Mazda 6, 05-11 Mercury Mariner, 10-11 Mercury Milan, 04-07 Mercury Monterey, 95-98 Oldsmobile Achieva, 99-01 Oldsmobile Alero, 95-99 Oldsmobile Aurora, 93-97 Pontiac Firebird
Bosch Automotive 9655 Double Iridium OE Replacement Spark Plug Up to 4X Longer Life (1 Pk) Buick Cadillac Chevrolet Ford: E, F, 150, 250 Mazda Mercury Oldsmobile Pontiac +More: image
92%
customers recommend this product
4.6/ 5
3

ACDelco Professional R44LTS6 Conventional Spark Plug (Pack of 1)

722 ratings | 22 offers | 722 Reviews
Price: $1.69$11.95
Why we chose it
  • Black Onyx coating helps reduce corrosion
  • Copper core provides great heat transfer and helps maximize plug durability
  • Ribbed suppressor seal extends resistance and helps prevent spark flash over and misfires
  • Available for use in Marine applications
  • Nickel-chrome alloy sheathing helps prevent corrosion on center electrode
ACDelco Professional R44LTS6 Conventional Spark Plug (Pack of 1): image
94%
customers recommend this product
4.7/ 5
Mileage4.4
Longevity4.3
Value for money4.2
Easy to install3.5
4

4 PCSNEW — DENSO #4511 PLATINUM T T Spark Plugs — PT16TT

171 ratings | 9 offers | 171 Reviews
Price: $13.98$23.74
Why we chose it
  • PLATINUM T T
  • FREE SHIPPING For This Item
  • Spark Plugs
  • 1order 4 Pieces
  • DENSO # 4511 — PT16TT
4 PCSNEW -- DENSO #4511 PLATINUM T T Spark Plugs -- PT16TT: image
94%
customers recommend this product
4.7/ 5
Value for money4.8
Mileage4.6
Longevity4.4
5

ACCEL 0576S-4 Shorty Copper Core Spark Plug, (Pack of 4)

108 ratings | 10 offers | 108 Reviews
Price: $38.91$61.68
Why we chose it
  • Ideal for use in cramped spaces
  • Deliver significantly more power at high rpm
  • Pack of four
  • Instant throttle response and better fuel economy
  • Less fouling flame dissipation and misfire
ACCEL 0576S-4 Shorty Copper Core Spark Plug, (Pack of 4): image
94%
customers recommend this product
4.7/ 5
6

Denso (5026) T16PR-U11 Traditional Spark Plug, Pack of 1

1 ratings | 12 offers | 1 Reviews
Price: $1.46$8.64
Why we chose it
  • Stable combustion during idling
  • Efficient fuel consumption
  • Improved cold-starting
  • Increases engine performance and throttle response
  • T16PR-U11
Denso (5026) T16PR-U11 Traditional Spark Plug, Pack of 1: image
100%
customers recommend this product
5/ 5
7

Autolite AP145-4PK Platinum Spark Plug, 4 Pack

24 ratings | 5 offers | 24 Reviews
Price: $10.29$30.1
Why we chose it
  • Platinum alloy pad on ground electrode provides extended durability and service life and platinum-to-platinum firing
  • Yttrium enhanced, high nickel alloy side electrode maintains precise gap to increase plug life
  • Nickel-plated steel shell for long-life corrosion resistance
  • Full platinum tip ensures virtually no gap erosion for long plug life
  • Necked-down center electrode fires quicker and cleaner, with less voltage for easier starts, quicker acceleration, and improved fuel economy
Autolite AP145-4PK Platinum Spark Plug, 4 Pack: image
90%
customers recommend this product
4.5/ 5
8

NGK 6630 V-Power Spark Plug – UR4, 4 Pack

16 ratings | 5 offers | 16 Reviews
Price: $6.96$20.79
Why we chose it
  • Offers reliable performance
  • Improved ignitability over standard nickel plugs
  • Actual OE or equivalent spark plug
  • Tested to the highest OE standards
  • Trivalent metal plating eliminates the need for anti-seize
NGK 6630 V-Power Spark Plug - UR4, 4 Pack: image
66%
customers recommend this product
3.3/ 5
9

NGK (2953) YR5GP G-Power Platinum Spark Plug, Pack of 1

2 ratings | 5 offers | 2 Reviews
Price: $3.23$9.98
Why we chose it
  • Features superior anti-corrosion and anti-seizing properties
  • Constructed from durable material
  • Fine platinum tip reduces required voltage
  • You can depend on NGK for quality and reliability
  • Extremely durable under high heat
NGK (2953) YR5GP G-Power Platinum Spark Plug, Pack of 1: image
100%
customers recommend this product
5/ 5
10

Denso (4509) PTF16TT Platinum TT Spark Plug, (Pack of 1)

4 ratings | 5 offers | 4 Reviews
Price: $2.65$6.92
Why we chose it
  • Twin-tip technology with 11 mm platinum center electrode and 11 mm titanium enhanced ground electrode
  • Purified alumina powder insulator provides exceptional dielectric strength and thermal conductivity, allowing the material to stand up to extreme stress
  • Purified alumina powder insulator provides exceptional dielectric strength and thermal conductivity, allowing the material to stand up to extreme stress
  • Improve fuel economy, better acceleration and faster starts than all other single platinum plugs
Denso (4509) PTF16TT Platinum TT Spark Plug, (Pack of 1): image
90%
customers recommend this product
4.5/ 5
Top Pick
Bosch Automotive 9655 Double Iridium OE Replacement Spark Plug Up to 4X Longer Life (1 Pk) Buick Cadillac Chevrolet Ford: E, F, 150, 250 Mazda Mercury Oldsmobile Pontiac +More
Bosch Double Iridium Spark Plugs are engineered to deliver both high performance and long life, representing the best of OE spark plug technology. The ultra-fine wire design and laser welded tapered ground electrode deliver optimum performance, while the iridium center electrode and ground electrode help it to go the distance. Unlock the performance in your engine with Bosch Double Iridium Spark Plugs.
Ranking the Brands
ACDelco: 20.00%
Bosch Automotive: 10.00%
Denso: 30.00%
ACCEL: 10.00%
Autolite: 10.00%
NGK: 10.00%
: 10.00%

Comparison Table

Сomparison: ACDelco Gold 14 RAPIDFIRE Spark Plug (Pack of 1): imageСomparison: Bosch Automotive 9655 Double Iridium OE Replacement Spark Plug Up to 4X Longer Life (1 Pk) Buick Cadillac Chevrolet Ford: E, F, 150, 250 Mazda Mercury Oldsmobile Pontiac +More: imageСomparison: ACDelco Professional R44LTS6 Conventional Spark Plug (Pack of 1): imageСomparison: 4 PCSNEW -- DENSO #4511 PLATINUM T T Spark Plugs -- PT16TT: imageСomparison: ACCEL 0576S-4 Shorty Copper Core Spark Plug, (Pack of 4): imageСomparison: Denso (5026) T16PR-U11 Traditional Spark Plug, Pack of 1: imageСomparison: Autolite AP145-4PK Platinum Spark Plug, 4 Pack: imageСomparison: NGK 6630 V-Power Spark Plug - UR4, 4 Pack: imageСomparison: NGK (2953) YR5GP G-Power Platinum Spark Plug, Pack of 1: imageСomparison: Denso (4509) PTF16TT Platinum TT Spark Plug, (Pack of 1): image
ACDelco Gold 14 RAPIDFIRE Spark Plug (Pack of 1)Bosch Automotive 9655 Double Iridium OE Replacement Spark Plug Up to 4X Longer Life (1 Pk) Buick Cadillac Chevrolet Ford: E, F, 150, 250 Mazda Mercury Oldsmobile Pontiac +MoreACDelco Professional R44LTS6 Conventional Spark Plug (Pack of 1)4 PCSNEW — DENSO #4511 PLATINUM T T Spark Plugs — PT16TTACCEL 0576S-4 Shorty Copper Core Spark Plug, (Pack of 4)Denso (5026) T16PR-U11 Traditional Spark Plug, Pack of 1Autolite AP145-4PK Platinum Spark Plug, 4 PackNGK 6630 V-Power Spark Plug – UR4, 4 PackNGK (2953) YR5GP G-Power Platinum Spark Plug, Pack of 1Denso (4509) PTF16TT Platinum TT Spark Plug, (Pack of 1)
BrandACDelcoBosch AutomotiveACDelcoDensoACCELDensoAutoliteNGKDenso
Core MaterialCopperCopperCopperPlatinumCopper
Top Material TypeNickelNickelAlloy SteelNickel, Alloy SteelMetal, Nickel
ManufacturerACDelcoBoschACDelcoDenso Sales California, Inc.AccelDENSOAutoliteNGKDenso
Item Weight0.32 ounces0.8 ounces6.4 ounces0.16 ounces5.6 ounces1.44 ounces7.2 ounces0.798 ounces1.44 ounces
Product Dimensions4.41 x 3.59 x 1.44 inches4.1 x 3.6 x 1.1 inches4.4 x 3.8 x 1.7 inches3.62 x 3.84 x 0.96 inches1 x 3.6 x 4.9 inches8.4 x 2.4 x 2.1 inches3.7 x 1 x 0.9 inches
Country of OriginUSAGermanyMexicoChinaMexico
Is Discontinued By ManufacturerYesNoYesNoNoNoNoNo
ExteriorChromeMachinedChromeMachined

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