Best Distributor Cap Adapters in 2026

Daisy
Last Updated: Feb 6, 2026

At a Glance: Our Top Picks for Distributor Cap Adapters

ACDelco GM Original Equipment D329A Ignition Distributor Cap , Black
#TOP1
Acdelco Gm Original Equipment D329A Ignition Distributor Cap
9.8
PM SCORE
ACDelco GM Original Equipment D328A Ignition Distributor Cap , Black
#TOP2
Acdelco Gm Original Equipment D328A Ignition Distributor Cap
9.8
PM SCORE
ACDelco C349 Professional Ignition Distributor Cap
#TOP3
Acdelco C349 Professional Ignition Distributor Cap
9.7
PM SCORE

* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.

Summary of the Best Distributor Cap Adapters of 2026

Market Overview
Distributor Cap Adapters Reviewed
  • Reviews Analyzed: 4947 Items
  • PM Avg. Rating: 7.3 / 10
18 Products Evaluated
  • Highest Price: $112.57
  • Lowest Price: $7.85
  • Avg. Price: $28.58

Acdelco Gm Original Equipment D329A Ignition Distributor Cap , Black

ACDELCO
D329A
8.00 X 4.60 X 2.20 Inches
0.20 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

have metal inserts designed to provide the best possible fit to ensure maximum conductivity between the distributor towers and spark plug wires

easy-to-read locator keys on caps make proper installation simple

equipped with a full anti-arc barrier to reduce the possibility of secondary voltage arcs that can cause an engine to misfire

Fit type: Vehicle Specific

Acdelco Gm Original Equipment D328A Ignition Distributor Cap , Black

ACDELCO
D328A
8.00 X 4.60 X 2.20 Inches
0.23 pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Have metal inserts designed to provide the best possible fit to ensure maximum conductivity between the distributor towers and spark plug wires

Easy-to-read locator keys on caps make proper installation simple

Equipped with a full anti-arc barrier to reduce the possibility of secondary voltage arcs that can cause an engine to misfire

GM-recommended replacement part for your GM vehicle’s original factory component

Offering the quality, reliability, and durability of GM OE

Acdelco C349 Professional Ignition Distributor Cap

ACDELCO
C349
5.20 X 5.20 X 4.40 Inches
0.35 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

leading manufacturer of high-quality products

international renown for our diverse range of award-winning products

fully equipped with state-of-the-art technology

all products have been designed with the professional in mind

constantly modernizing our powerful devices to meet the demands of the modern user

Fit type: Vehicle Specific

Acdelco Professional D580A Ignition Distributor Cap , Black

ACDELCO
D580A
5.20 X 5.20 X 4.40 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

made in united states

package height :12.953 cm

package length :13.208 cm

package width :11.176 cm

Fit type: Vehicle Specific

Acdelco Gm Original Equipment D303A Ignition Distributor Cap , Black

ACDELCO
D303A
6.70 X 5.70 X 4.20 Inches
0.50 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Have metal inserts designed to provide the best possible fit to ensure maximum conductivity between the distributor towers and spark plug wires

Easy-to-read locator keys on caps make proper installation simple

Equipped with a full anti-arc barrier to reduce the possibility of secondary voltage arcs that can cause an engine to misfire

GM-recommended replacement part for your GM vehicle’s original factory component

Offering the quality, reliability, and durability of GM OE

Bosch Automotive 03010 Distributor Cap

BOSCH AUTOMOTIVE
03010
0.00 X 0.00 X 0.00 Inches
0.25 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Newparts 9.54

Features

Superior surface finish prevents dirt and moisture build-up while resisting carbon tracking for long life

RFI resistors (Asian) / RFI suppression (European) prevents dirt and moisture build-up while resisting carbon tracking for long life

Installation screws provides quick and easy installation

Provides quick, Easy installation

Acdelco Professional D336X Ignition Distributor Cap , Black

ACDELCO
D336X
4.50 X 5.60 X 6.60 Inches
0.75 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Professional, premium aftermarket replacement

Provides the performance and dependability you expect from ACDelco

Manufactured to meet expectations for fit, form, and function

Quicksilver 8M0061335 Distributor Cap Kit

QUICKSILVER
8M0061335
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Cap is made from a blend of PBT and PET plastics for increased strength, stiffness and resistance to warpage

Solid brass inserts resist corrosion and electrical pitting for long service life

High strength to weight ratio for durability and resistance to thermal cracking

Designed to resist RFI interference with onboard electronics

Produced to meet Mercury Marine original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser stern drive

Standard Motor Products, Inc. - Cap Distributo (Fd-169T)

STANDARD MOTOR PRODUCTS
FD169T
5.00 X 4.20 X 5.00 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Standard Motor FD169T T-Series Distributor Cap (FD169T)

Part number: FD169T

Fit type: Vehicle Specific

Package Weight: 0.25 pounds

Motorcraft Dh411B Distributor Cap,Grey

MOTORCRAFT
DH411B
4.34 X 4.18 X 6.54 Inches
0.05 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
USAutopartsCar 9.52

Features

Molded from high density phenolic or polyester compounds

Provides maximum strength, dimensional stability and electrical insulating properties

Prevents dirt and moisture from entering the distributors

Features integrally molded metal contact inserts

Resists corrosion and abrasion

Acdelco Professional D338X Ignition Distributor Cap , Black

ACDELCO
D338X
6.50 X 4.20 X 6.50 Inches
0.70 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

have metal inserts designed to provide the best possible fit to ensure maximum conductivity between the distributor towers and spark plug wires

easy-to-read locator keys on caps make proper installation simple

equipped with a full anti-arc barrier to reduce the possibility of secondary voltage arcs that can cause an engine to misfire

Fit type: Vehicle Specific

Bosch 03111 Distributor Cap

BOSCH AUTOMOTIVE
03111
0.00 X 0.00 X 0.00 Inches
0.05 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Made to withstand extreme demands (up to 30,000 Volts)

Provides high tracking resistance

Made of glass fiber reinforced polyester

Meets or exceeds OEM specifications

Guaranteed fit and function

Bosch 03422 Distributor Cap

BOSCH AUTOMOTIVE
03422
0.00 X 0.00 X 0.00 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Made to withstand extreme demands (up to 30,000 Volts)

Provides high tracking resistance

Made of glass fiber reinforced polyester

Meets or exceeds OEM specifications

Guaranteed fit and function

Standard Motor Products Fd-166 Distributor Cap Adapter

STANDARD MOTOR PRODUCTS
FD-166
6.50 X 2.50 X 6.56 Inches
0.28 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Product Type :Auto Part

Package Dimensions :17.526 Cm L X17.272 Cm W X6.604 Cm H

Country Of Origin :China

Package Weight :2.052Lbs

Original Engine Management 4204 Distributor Cap

ORIGINAL ENGINE MANAGEMENT
4204
3.88 X 3.88 X 3.88 inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Distributor caps are manufactured to match O.E. form, fit and function.

They offer the following high-performance features: *Polypropylene, PBT, or Thermoset molding material for maximum dielectric strength and resistance to carbon-tracking

Brass, aluminum, stainless, or tin-plated terminals and inserts for superior conductivity.

Arc-resistant dielectric material

Brass or aluminum insert material

Internal resistor where required

#TOP16

Nicecnc Cop Distributor Cap Compatible With Honda Civic Si 1999-2000 B16 Del Sol Si Vtec 1994-1997 Prelude Si 1992-1996 H22 H23 Acura Integra 1990-2001 B18 B17 Black

NICECNC
NICECNC9131054101[009]
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
NICECNC 9.81

Features

🚗🚗 The cop distributor cap is required when you replace the distributor igniter with a more reliable COP ignition system for some common performance problems.

🚗🚗 Made from aircraft-grade billet aluminum for added strength and durability

🚗🚗 Processed by anodizing for added corrosion resistance and a sleek look. Adapt well to any bad weather conditions.

🚗🚗 Machined by the latest generation CNC technology that ensures high accuracy for a perfect fit.

Nicecnc Coil On Plug Adapter Cover And Distributor Cap Replace Kit Compatible With Honda Acura B-Series Vtec B16 B18C Black

NICECNC
NICECNCZZ9006001[009]
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
NICECNC 9.80

Features

🚗🚗 The cop distributor cap cover is required when you replace the distributor igniter with a more reliable COP ignition system for some common performance problems.

🚗🚗 Made of premium 6061-T6 billet aluminum, super lightweight and sturdy for long-time use.

🚗🚗 Processed by anodizing for added corrosion resistance and a sleek look. Adapt well to any bad weather conditions.

🚗🚗 Machined by the latest generation CNC technology that ensures high accuracy for a perfect fit.

Dragon Fire Performance Ignition Distributor Cap & Cap Adapter Compatible With 1978-1996 Ford F-150 Efi 5.0L 5.8L 6.6L 6.9L 7.5L V8 Replaces Fd168 Fd166 Fd307 Oem Fit Cap1045-R

AIP ELECTRONICS
CAP1045-R
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
AIP Electronics 9.54

Features

MANUFACTURER: DRAGON FIRE PERFORMANCE

Compatible with 1978-1996 Ford EFI 5.0L 5.8L 6.6L 6.9L 7.5L V8 *Be Sure to Check for Correct Fitment Using the Chart Above. Don't See a Chart? Message us for help.

FEATURES OE Factory Fit, designed with performance and reliability in mind. precision molded thermoplastic cap resists fracturing and cracking from the constant heat cycling, all connections are watertight and weatherproof, tested and ensured to match OE fit, only premium grade materials used for a long service life. Comes exactly as pictured.

DIRECT Factory Fit and Ready for Installation Straight Out of The Box

EASY DIY Plug and Play Install. Perfect for any professional or weekend mechanic.

Top 10 distributor cap adapters Brands on Amazon

Here is the list of top-rated brands that were evaluated by PM.

Brand Count
Acdelco 7
Bosch Automotive 3
Nicecnc 2
Standard Motor Products 2
Aip Electronics 1
Motorcraft 1
Original Engine Management 1
Quicksilver 1

Top 10 distributor cap adapters Brands Pie Chart


We've carried out a comprehensive analysis of 4,947 reviews on distributor cap adapters, using our selection criteria to identify the best options in the automotive replacement parts. Our findings reveal that most customers typically select distributor cap adapters priced around $28.58, with top brands including standard motor products, michigan motorsports, nicecnc, moroso, tru-tech, aip electronics, quicksilver, msd and acdelco and accel

Our team of expert editors reviewed these high-quality items and handpicked the top 18 distributor cap adapters for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the automotive replacement parts category. These include amazon.com, michigan motorsports, nicecnc, aip electronics, holley performance product, newparts, gwa auto parts and usautopartscar and commotion auto .

We are dedicated to assisting our users in finding the right caps Products based on their needs, saving them considerable time when choosing which distributor cap adapters to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.