The Best Injector Caps of 2023 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best Injector Caps of 2023. Check our ranking below.

2,007 Reviews Scanned

SaleRank No. #1

14mm Diesel Common Rail Fuel Injector Block-Off Tool Cap M14 for 2003-2007 Dodge Cummins 5.9L; 2001-2005 Chevy GMC 6.6L Duramax LB7 LLY Engine, 2PCS

Vehicle Compatibility - Fits for 2001-2005 Chevy GMC Duramax 6.6L (LB7 & LLY) and 2003-07 Dodge Cummins 5.9L Engine, also fit for Bosch diesel common rail system and other vehicles with a 14mm fuel line nut.
Superior Function - This diesel fuel injector block off cap tool can helps in identification of faulty diesel fuel injectors and also used to diagnose engine knock sounds.
Premium Material - Full carbon steel craftsmanship with surface antirust, M14x1.5 /14mm internal thread nuts.
Package Quantity - 2 pieces Cap/Block-Off Tools.
24 Months Quality Guarantee - We extremely value your satisfaction and strive to provide you good shopping experience. Any further question, please feel free to contact us!

SaleRank No. #2

iDeretool 14mm Diesel Common Rail Fuel Injector Block-Off Tool M14 Cap for 2003-2007 Dodge Cummins 5.9L & 2001-05 Chevy GMC 6.6L Duramax LB7 LLY Engine (Pack of 4)

Fitment: Fits for 2001-2005 Chevy GMC Duramax 6.6L LB7 LLY and 2003-07 Dodge Cummins 5.9L, also fit for Bosch diesel common rail system or other vehicles with a 14mm fuel line nut.
Carbon steel craftsmanship constructed of high-quality with surface antirust.
This diesel fuel injector block-off cap tool can helps in identification of faulty diesel fuel injectors and also used to diagnose engine knock sounds.
M14x1.5 / 14mm internal thread size nuts
Includes 4 pieces Cap/Block-Off Tools

SaleRank No. #3

iDeretool 18mm Rail Fuel Injector Block-Off Tool M18 Cap for 2007-2018 Dodge Cummins 6.7L Diesel and 2006-11 Duramax 6.6L LBZ LMM (2PCS)

Fitment: Compatible with 2007-2018 Dodge Cummins 6.7L Diesel & 2006-2011 Chevy/GMC Duramax 6.6L LBZ LMM.
This tool will also work on Renault and other vehicles with a 18mm fuel line nut.
Made of carbon steel, anti-rust finished.
M18 x 1.5 /18mm internal thread size.
24 Months Quality Guarantee---We extremely value your satisfaction and strive to provide you good shopping experience. Any further question, please feel free to contact us at any time

Rank No. #4

kweiny Diesel Common Rail 14mm Fuel Injector Cap Block Off Tool

Main Usage: Identification of faulty diesel fuel injectors and diagnosis of engine cylinder knocking sounds;
Compatibility: Fit with 2001-2005 6.6L Chevy/GMC Duramax and for Dodge/Cummins 2003-2007 5.9L, for Bosch diesel common rail system, and other vehicles with a 14mm fuel line nut;
Working principle: Block the fuel supply to the detected cylinder, and sealed diesel common rail pipe. Make the detected cylinder temporarily stop working;
Specification: M14x1.5mm internal thread nut;
Material: Carbon tool steel, surface galvanized.

SaleRank No. #5

UREMCO 5-8 Fuel Injector Seal Kit, 1 Pack

Seal Kit to service 8 Fuel Injectors; Includes O-rings, Filter Baskets and Pintle Caps;
All parts made in the USA!
Easy Installation

SaleRank No. #6

PLENTZOM 14MM Fuel Injector Block-Off Tool Cap 9011 EN-47589-1 Compatible with Dodge Cummins 5.9L and 6.6L Chevy/GMC Duramax 2003-2018

Material: Carbon Steel
Inner Diameter: M14;Thread Interval: 1.5;
Replace Parts Number # Miller 9011 / GM EN-47589-1;
Compatible with 2001-2005 6.6L Chevy/GMC Duramax
Compatible with Dodge / Cummins 2003-2007 5.9L

Rank No. #7

12mm Diesel Common Rail Fuel Injector Cap Block-Off Tool Replacement for 2008 2009 2010 Ford Powerstroke 6.4L Engine 4PCS

Compatibility for Ford Powerstroke 6.4L engines, also works on other vehicles with a 12mm fuel line nut.
This diesel fuel injector block-off cap tool can helps in identification of faulty diesel fuel injectors and also used to diagnose engine knock sounds.
Made of full carbon steel, surface antirust.
M12x1.5 / 12mm internal thread nuts.
Kit includes: 4 pieces Cap/Block-Off Tools.

Rank No. #8

DABLIZ Group INTERNATION Trading LLC (New) Fuel Injector Joint Cap Many TRX 420 500 OEM (See Notes) K103 B + Many Other Models in The Description

FITS YEAR/MAKE/MODEL: 2009-2014 TRX420FA/FPA Fx Rancher Automatic With/Without EPS
2007-2013 TRX420TM/TE/FM/FPE/FPE Fx Rancher 420 All Models
2012-2013 TRX500FM/FE/FPE/FPM Foreman 500
New Genuine Hnd Fuel Injector Joint Cap Many TRX 420 500 OEM (See Notes)K103 B
FOR any questions - please contact with us !

Rank No. #9

Fuel Injector Cap Fit for Honda Foreman 500 Foreman Rubicon 500 Rancher 420 Pioneer 500 2014-2021 Replace 16422HR3A41

Fitment: Fuel injector cap fit for Honda Foreman 500 2014-2019, Foreman Rubicon 500 2015-2019, Rancher 420 2014-2021, Pioneer 500 2015-2021, please confirm whether your model matches before purchasing
Replace Part Number: Replace 16422-HR3-A41, 16422HR3A41
High Quality Raw Materials: Made of durable materials, high precision, good sealing, able to withstand high pressure and high temperature, corrosion resistance, strict quality inspection before leaving the factory to ensure stable performance and longer service life
Easy to Install: It only takes a few minutes to directly replace the old or bad parts, plug and play, there is no looseness or shaking after installation, easy to install and remove, help you save time and money
What You Get: 1x fuel injector cap, if you encounter problems during product installation and use, please contact our technical team in time, and our technical team will reply to you within 12 hours

Rank No. #10

HiSport Fuel Injector Seal Kits Include O-rings, Pintle Caps, Seal Spacers and Filter Baskets Universal Repair Set Replaces 0280150962 [8 Set]

[COMPATIBILITY] This fuel injector rebuild installation kits combination is a universal kit, compatible with the most commonly used injectors 0280150943 0280150955 0280150962.Compatible with Ford V8 5.4L 4.6L Fuel Injector Service Repair Kit Seals Pintle Caps Filters.
[PACKAGE INCLUDES] This fuel injector repair kits include 8 micro filters 101, 16 injector O-ring 203, 8 injector retaining pintle caps 308, 8 injector spacers and 8 injector seal.
Micro Filters CF101-( 6X3X12mm), Injectors O ring 203 -(7.5X3.5mm), Injector retaining pintle Cap 308 - 12X8X6.5mm, Injector spacers seal 307 - (12.6*8.4*2mm), Injector seal 302 - (13X11X1.3mm)
[QUALITY CONTROL] This fuel injector repair installation kits set is 100% testing during the manufacturing process. o rings are made by FKM VITON material, it resistants high temperature which more than 200 degrees. All Items tested for reliability, durability.
[SATISFACTION] HiSport ensures brand new and high-quality products. In terms of any problem with this product, please contact us, our friendly assistants will always be available to help you within 24 hours.

Rank No. #11

12mm Diesel Common Rail Fuel Injector Cap Block-Off Tool M12 Compatible with 2008 2009 2010 Ford Powerstroke 6.4L Engine 2PCS

This diesel fuel injector block-off cap tool can helps in identification of faulty diesel fuel injectors and also used to diagnose engine knock sounds.
Useful tool for diagnosing no-start condition on Powerstroke 6.4L engines, also works on other vehicles with a 12mm fuel line nut.
Made of full carbon steel, surface antirust
Specifications: M12x1.5(12mm) internal thread nuts
Kit includes: 2pcs Cap/Block-Off Tools

Rank No. #12

EN-47589-02 9011 Diesel Rail Fuel Injector Cap/Fuel Pressure Test/Block Off Adapter Tool Set Alt for 2003-2009 Ram 2500, 3500 Cummins 5.9L/2001-2005 GMC Chevy Duramax 6.6L LB7 & More (6PCS)

【"MUST HAVE"】This Fuel Injector Block off Tool Cap Kit is used for diagnostics for the GM/Chevy 6.6L Duramax and Cummins 5.9L diesel engines in DR trucks. A cap can be used to identify the individual cylinder that is at fault while doing a return flow volume test. Also can be used to diagnose engine knocking sounds that may be caused by diesel injector or single cylinder problems.
【Fit for Dodge Ram】This Block Off Adapter Set is compatible with 2003-2009 Ram 2500, 3500 Cummins ISB 5.9L Diesel.
【Fit for GMC / Chevy】This Block Off Adapter Set is compatible with 2001-2003 GMC / Chevy 2500, 3500 Duramax 6.6L LB7 Diesel & 2004 GMC / Chevy 2500, 3500 Duramax 6.6L LB7/LLY Diesel & 2005 GMC / Chevy 2500, 3500 Duramax 6.6L LLY Diesel & 2006 Hummer H1 Alpha Duramax 6.6L LLY Diesel.
【Fit for Medium Duty GMC】This Block Off Adapter Set is compatible with 2003 GMC Topkick C4, C5 Duramax 6.6L LB7 Diesel & 2004 GMC Topkick C4, C5 Duramax 6.6L LB7 LLY Diesel & 2005-2007 GMC Topkick C4, C5 Duramax 6.6L LLY Diesel.
【Durable Quality】Made of high quality and high strength STEEL & COPPER for durability and good performance. Anti-rust surface, keeping good rust, wear and corrosion resistance.

SaleRank No. #13

Tektall Fuel Injector Cap Fits for Hon-da Trx420 Rancher 500 2014-2017 14-17 16422HR3A41

Top Quality - Made of high-quality materials, it fully meets OEM standards and provides a longer service life.
Fitment - Fits for 2014-2019 Foreman 500, 2015-2019 Foreman Rubicon 500, 2014-2021 Rancher 420, 2015-2021 Pioneer 500
Replaces part number - 16422-HR3-A41 16422HR3A41

Rank No. #14

kweiny Diesel Common Rail 18mm Fuel Injector Cap Block Off Tool

Main Usage: Identification of faulty diesel fuel injectors and diagnosis of engine cylinder knocking sounds;
Compatibility: Fit with 2006-2011 6.6L Chevy/GMC Duramax (LBZ & LMM) and for Dodge/Cummins 2007-2017 6.7L, Renault engine system, and other vehicles with a 18mm fuel line nut;
Working principle: Block the fuel supply to the detected cylinder, and sealed diesel common rail pipe. Make the detected cylinder temporarily stop working;
Specification: M18x1.5mm internal thread nut;
Material: Carbon tool steel, surface galvanized.

SaleRank No. #15

16422HR3A41 Fuel Injector Cap Replacement for Honda Foreman 500 2014-2019 Replace 16422-HR3-A41

【Replace part number】16422HR3A41; 16422-HR3-A41.
【Fitment】Replacement for 2014-2019 Foreman 500, Replacement for 2015-2019 Foreman Rubicon 500.
【Fitment】Replacement for 2014-2021 Rancher 420, Replacement for 2015-2021 Pioneer 500.
【Feature】 Made of high quality material, every product must take inspected and tested multiple times before the shipment.
【BUY WITH CONFIDENCE】 Order from Vkinman, if you ever have any issues, simply contact us for a free replacement or refund. We support 24 hours online customer service.

SaleRank No. #16

Fuel Injector Cap 16422HR3A41 Fits for Honda 2014-2019 Foreman 500 2015-2019 Foreman Rubicon 500 2014-2021 Rancher 420 2015-2021 Pioneer 500

Fits for: 2014-2019 Foreman 500 2015-2019 Foreman Rubicon 500 2014-2021 Rancher 420 2015-2021 Pioneer 500.
Replaces part number: 16422HR3A41.
High quality: Made of high-quality materials and has undergone strict quality inspection before leaving the factory, with a long service life.
Easy to install: It only takes a few minutes to replace the old or bad parts directly, plug and play, and save your time and money.
After-sales service. No need to worry about problems in the project. Please don't hesitate to contact us if there is any question, we will reply within 24 hours and help solve the problem.

Rank No. #17

HiSport Fuel Injector Seal Kits Rebuild Set Include O-rings, Pintle Caps, Seal Spacers, Filter Baskets with 1pcs Filter Removal Tool [8 Set]

[COMPATIBILITY] This fuel injector rebuild installation kits combination is a universal kit, compatible with the most commonly used injectors 0280150943 0280150955 0280150962.
[PACKAGE INCLUDES] This fuel injector repair kits include 8 micro filters 101, 16 injector O-ring 203, 8 injector retaining pintle caps 308, 8 injector spacers and 8 injector seal,1 micro filter removal tool.
[DIMENSION] Micro Filters CF101-( 6X3X12mm), Injectors O ring 203 -(7.5X3.5mm), Injector retaining pintle Cap 308 - 12X8X6.5mm, Injector spacers seal 307 - (12.6*8.4*2mm), Injector seal 302 - (13X11X1.3mm), 1pcs x Removal tool - (105 mm).
[QUALITY CONTROL] This fuel injector repair installation kits set is 100% testing during the manufacturing process. o rings are made by FKM VITON material, it resistants high temperature which more than 200 degrees. All Items tested for reliability, durability.
[SATISFACTION] HiSport ensures brand new and high-quality products. In terms of any problem with this product, please contact us, our friendly assistants will always be available to help you within 24 hours.

Rank No. #18

Diesel Common Rail 20mm Fuel Injector Cap Block-Off Tool / M20 Tester

Working Principle: Block the fuel supply to the detected cylinder, and sealed diesel common rail pipe. Make the detected cylinder temporarily stop working.
Main Function: Identification of faulty diesel fuel injectors and diagnosis of engine cylinder knocking sounds.
Fitments: Compatibility with most of diesel common rail system with a 20mm fuel line nut.
Carbon tool steel, surface antirust.
M20x1.5mm / 20mm internal thread nut.

SaleRank No. #19

Pro-Cure Magnum Bait Injector Needles with Cap (Pack of 3), 8 Ounce

Bait injector cap with needle
Allows you to inject massive amounts of scent into baits
Fits any pro-cure 8 ounce bottle
14 gauge needle
Much safer and easier to Use than a Hypodermic needle

Rank No. #20

X AUTOHAUX 2pcs 12mm Diesel Common Rail Fuel Injector Cap Block Off Tool Replacement for Ford for Powerstroke 6.4L Engines M12x1.5 Fuel Injector Cap Block Off Tool Brassy

[Application of Fuel Injector Cap Block Off Tool] Suit for Ford for Powerstroke 6.4L engines 2008 2009 2010, it can also apply on other vehicles which with 12mm fuel line nut.
[Function]Use to block the fuel supply of the detected cylinder, to sealing diesel common rail pipe, let the detected cylinder temporarily stop working. So as to check the faulty diesel fuel injectors and engine cylinder.
[Precise Suitable Block Off Cap] M12x1.5 / 12mm internal thread nuts. Well suit to use with original diesel common rail fuel injector line.
[Durable Cap] Adopt with reliable metal material with galvanized surface, not easy break or deform, hard resistant, prolong service life.
[Package] Include 2 x fuel injector cap block off tool 12mm. An convenient tool for people who works on common rail fuel systems.

Last update on 2023-08-11 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

How Do You Buy The Best Injector Caps?

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We provide an Injector Caps buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available Injector Caps currently available on the market.

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Brand Value: Every brand of Injector Caps has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
Features: What bells and whistles matter for an Injector Caps?
Specifications: How powerful they are can be measured.
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Customer Ratings: Number ratings grade Injector Caps objectively.
Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their Injector Caps.
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The Best Injector Caps of 2023 – Reviewed and Top Rated

How Do You Buy The Best Injector Caps?

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