20 Best Exhaust Flapper Valve [2024]

Are you looking for the best Exhaust Flapper Valve? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling Exhaust Flapper Valve.

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# Preview Product
1 Sierra 18-4457 Exhaust Protector Valve Sierra 18-4457 Exhaust Protector Valve
2 Sierra 18-4458 Exhaust Protector Valve white, 5' & 6' Sierra 18-4458 Exhaust Protector Valve white, 5" & 6"
3 Sierra 18-4456 Exhaust Protector Valve Sierra 18-4456 Exhaust Protector Valve
4 Seachoice 28351 Exhaust Guard Covers – Fits 3 Inch OD Pipe – Black Rubber with Stainless Steel... Seachoice 28351 Exhaust Guard Covers – Fits 3 Inch OD Pipe – Black Rubber with Stainless...
5 Draft Blocker 4 Inch - Backdraft Damper - Draft Stopper - Backflow Preventer - Vent Deflector (4''... Draft Blocker 4 Inch - Backdraft Damper - Draft Stopper - Backflow Preventer - Vent Deflector...
6 SPELAB Electric Exhaust Cutout Valve 3.0 Inch 76mm Catback Single Y Pipe with One Controller Remote... SPELAB Electric Exhaust Cutout Valve 3.0 Inch 76mm Catback Single Y Pipe with One Controller...
7 neverest - RKI 100 - Backdraft Damper Shutter Inline for 4 Inch Dryer Duct for Retrofitting 4 Inch... neverest - RKI 100 - Backdraft Damper Shutter Inline for 4 Inch Dryer Duct for Retrofitting 4...
8 Walker Exhaust Heavy Duty 35225 Exhaust Pipe Rain Cap Walker Exhaust Heavy Duty 35225 Exhaust Pipe Rain Cap
9 Somusen 3 inch Electric Exhaust Cutout Valve Catback Y Pipe 1 pcs with One Controller Remote Kit Somusen 3 inch Electric Exhaust Cutout Valve Catback Y Pipe 1 pcs with One Controller Remote Kit
10 Seachoice 28361 Exhaust Guard Covers – Fits 4 Inch OD Pipe – Black Rubber with Stainless Steel... Seachoice 28361 Exhaust Guard Covers – Fits 4 Inch OD Pipe – Black Rubber with Stainless...
11 2' Replacement Flapper for Stainless Steel and Plastic Thru Hull scuppers 2" Replacement Flapper for Stainless Steel and Plastic Thru Hull scuppers
12 PQY Universal 3“ Electric Exhaust Cutout Remote Controller Motor E-cut Valve Kit Dual Flaps Type PQY Universal 3“ Electric Exhaust Cutout Remote Controller Motor E-cut Valve Kit Dual Flaps Type
13 CARMOCAR 3 inch Electric Exhaust Control E-Cut Out Valve System Electric Cutout Y Pipe With Switch... CARMOCAR 3 inch Electric Exhaust Control E-Cut Out Valve System Electric Cutout Y Pipe With...
14 Maxsa Innovations 20333 Escaper Buddy Traction Mats for Off-Road Mud, Sand, & Snow Vehicle... Maxsa Innovations 20333 Escaper Buddy Traction Mats for Off-Road Mud, Sand, & Snow Vehicle...
15 Donaldson P270541 5' Rain Cap, 1 Pack Donaldson P270541 5" Rain Cap, 1 Pack
16 SPELAB 2.5 Inch Stainless Steel Exhaust Pipe Kit SPELAB 2.5 Inch Stainless Steel Exhaust Pipe Kit
17 2pcs Exhaust Flappers Water Shutters Kit 807166A1 for Many Mercruiser Stern Drive V8 Engines (Some... 2pcs Exhaust Flappers Water Shutters Kit 807166A1 for Many Mercruiser Stern Drive V8 Engines...
18 CARMOCAR 2.5 inch Electric Exhaust Control E-Cut Out Valve System Electric Cutout Y Pipe With Switch... CARMOCAR 2.5 inch Electric Exhaust Control E-Cut Out Valve System Electric Cutout Y Pipe With...
19 T-H Marine FSRK-3-DP Scupper Flapper Repair Kit - Black T-H Marine FSRK-3-DP Scupper Flapper Repair Kit - Black
20 Fluidmaster 5403 Water-Saving Long Life Toilet Flapper for 3-Inch Flush Valves, Adjustable Solid... Fluidmaster 5403 Water-Saving Long Life Toilet Flapper for 3-Inch Flush Valves, Adjustable Solid...
Bestseller No. 1
Sierra 18-4457 Exhaust Protector Valve
  • Made with weather resistant EPDM with U/V stabilizer
  • Size: 4 inch, includes stainless steel clamp
  • Includes: Stainless Steel Clamp
  • Interchangeable with the following: GLM 89250, Mallory 9-44001 Mercruiser 13644Q01, 12644A1
  • Compounded rubber flapper valves prevent water from entering the exhaust system
Bestseller No. 2
Sierra 18-4458 Exhaust Protector Valve white, 5" & 6"
  • 5 inch Requires two 45° cuts
  • Meets or exceeds the original equipment quality
  • Compounded rubber flapper valves prevent water from entering the exhaust system
  • Interchangeable with the following: GLM 89260, Mallory 9-44002
  • Made with weather resistant EPDM with U/V stabilizer
Bestseller No. 3
Sierra 18-4456 Exhaust Protector Valve
  • Sierra Exhaust Protector Valve
  • Meets or exceeds the original equipment quality
  • Sierra part number: 18-4456
  • Interchangeable with the following: GLM 89240, Mallory 9-44000, Mercruiser 34765A2, 34765A1
Bestseller No. 4
Seachoice 28351 Exhaust Guard Covers – Fits 3 Inch OD Pipe – Black Rubber with Stainless Steel...
  • Prevent water from rushing in through exhaust thru-hulls when stopping or moving slowly
  • Black rubber with adjustable stainless-steel hose clamp
  • Fits 3 inch outer diameter (OD) exhaust pipe
  • Weather-resistant rubber flapper valve
  • Pack of 2 exhaust guard covers with clamps
Bestseller No. 5
Draft Blocker 4 Inch - Backdraft Damper - Draft Stopper - Backflow Preventer - Vent Deflector (4''...
  • Back draft damper is made for insertion into inch ventilation ducts. The backflow damper RKI opens and closes automatically. It has a strong spring...
  • Damper has 2 valves, designed for use in air conditioners (AC), dryers, exhaust, extractor or range hoods, heating ducts, vents and other HVAC...
  • INSTALLATION: The backflow flap is installed by inserting it into the ventilation pipe until it stops. The position of the spring should be horizontal...
  • The backflow flap opens and closes automatically at low air volumes. It has a smooth-running spring and an internal foam strip to keep the blades from...
  • Back draught valves can be inserted into ventilation ducts which are flexible or non flexible. Cannot be used with plastic ducts as the sizes are...
Bestseller No. 6
SPELAB Electric Exhaust Cutout Valve 3.0 Inch 76mm Catback Single Y Pipe with One Controller Remote...
  • One-Touch Loudness: 3.0 Inch Electric Exhaust Cutout Valve Kit fit for all types of vehicles. Note: please make sure you have enough space to install...
  • Function: This Cut Out Valve System Kit is specifically designed for single exhaust pipe and made to enhance the performance and power of your vehicle...
  • Cutout Valve: High-quality chrome-plated steel butterfly plate and valve pipe wall thickening process. You can turn on and off from the inside of the...
  • Working Environment: Working Voltage: 12V. Electric Exhaust Cutout Working Temperature: 0℃-150℃. If below -5℃, the oil in the motor will be...
  • SPELAB warrants the Electric Exhaust Cutout Valve Kit for 12 months warranty for quick-wear part. Include (motor, remote control, control box). We...
Bestseller No. 7
neverest - RKI 100 - Backdraft Damper Shutter Inline for 4 Inch Dryer Duct for Retrofitting 4 Inch...
  • 4 inch duct damper opens and closes AUTOMATICALLY, PREVENTING unwanted drafts and the duct valve for 4 inch ducting can be installed horizontally or...
  • 4 inch damper housing is made of GALVANIZED STEEL and the dryer vent valve flaps are made of aluminium the butterfly damper axis and spring are made...
  • Backflow damper exhaust fan shutters are DESIGNED for use in AC units, installation in dryer ducts, bathrooms, STOPPING INFLOW OF AIR from range hoods...
  • Bathroom vent draft blocker or exhaust fan shutter is INSTALLED by pushing the hvac damper into the duct, blades open away from exhaust air. The...
  • Opposing blade damper 4 backdraft should be interested behind the bathroom fan or inline fan. This will help weaker booster fans to push open the 4...
SaleBestseller No. 8
Walker Exhaust Heavy Duty 35225 Exhaust Pipe Rain Cap
  • Helps to stop moisture and objects from entering exhaust
  • Designed to fit Walker Truck Staxx
  • Available to fit a range of exhaust pipe diameters
  • New accessories help to ensure effective exhaust repairs
  • Walker supplies all of the accessories you need to do the complete exhaust job
SaleBestseller No. 10
Seachoice 28361 Exhaust Guard Covers – Fits 4 Inch OD Pipe – Black Rubber with Stainless Steel...
  • Prevent water from rushing in through exhaust thru-hulls when stopping or moving slowly
  • Black rubber with adjustable stainless-steel hose clamp
  • Fits 4 inch outer diameter (OD) exhaust pipe
  • Weather-resistant rubber flapper valve
  • Pack of 2 exhaust guard covers with clamps
Bestseller No. 11
2" Replacement Flapper for Stainless Steel and Plastic Thru Hull scuppers
  • 2" Scupper Flapper Kit
  • Includes flapper, mounting wedge, and machine screw
Bestseller No. 12
PQY Universal 3“ Electric Exhaust Cutout Remote Controller Motor E-cut Valve Kit Dual Flaps Type
  • ✿The pipe is made of high quality 304 Stainless Steel ,the motel beside is made of high quality aluminum alloy.
  • ✿Fit for 3"/76mm exhaust system.Two valves/flaps type.
  • ✿The exhaust cut out is made to enhance the performance & sound of your vehicle with Just A Touch Button.
  • ✿To open the cutout you simply flip the which and it will open your exhaust for a throatly rumble exhaust note.
  • ✿To open the cutout you simply flip the which and it will open your exhaust for a throatly rumble exhaust note.
Bestseller No. 13
CARMOCAR 3 inch Electric Exhaust Control E-Cut Out Valve System Electric Cutout Y Pipe With Switch...
  • 🚚SIZE:Inlet/ Major Piping Diameters: 3" (76mm).
  • UNIVERASL 🚚APPLICATION:fit for cars with 3 inlet exhaust pipes.
  • 🚚ELECTRICALLY CONTROLLED EXHAUST VALVES:simply flow with a knob on the remote control, designed to increase power 10-20 depending on application.
  • 🚚PIPINGS:Made of High Quality T-304 Stainless Steel with Computerized Mandrel-Bends for Strength and Durability.
  • 🚚ABOUT SERVICE:Durable and long lasting 3 inch exhaust control ,the customer service period is 1 year.Note: Please check the display pictures and...
Bestseller No. 14
Maxsa Innovations 20333 Escaper Buddy Traction Mats for Off-Road Mud, Sand, & Snow Vehicle...
  • 2 pack, each traction mat is 48 inches long and 14.5 inches wide
  • raised tracks help prevent vehicle tires from spinning on snow, ice, mud or sand
  • ideal for off-road use to help spinning tires get traction in the elements
  • lightweight, durable, high-impact polypropylene plastic construction make these built to last
  • no towing or pushing required
Bestseller No. 15
Donaldson P270541 5" Rain Cap, 1 Pack
  • Our innovative products solve complex filtration and exhaust system challenges that improve lives, enhance performance and protect our environment
  • Our exhaust system product Line Includes everything you need for a wide variety of on- and off-road applications
  • Package Dimensions: 7.1 L x 29.6 H x 17.5 W (centimeters)
  • Country of Origin : United States
Bestseller No. 16
SPELAB 2.5 Inch Stainless Steel Exhaust Pipe Kit
  • 2.5" Tube Diameter
  • 100 percent stainless steel
  • Instructions
  • Warranty Free: We value your shopping experience and strive to offer a high-quality product and service. And if you have any problem, contacting us...
Bestseller No. 17
2pcs Exhaust Flappers Water Shutters Kit 807166A1 for Many Mercruiser Stern Drive V8 Engines (Some...
  • ☛ These will Not work on V6 engines that came with the one piece manifolds ( use 807166A2 it has a flat tip ) ,or early V8 with the round pin going...
  • ☛ Used on many Mercruiser stern drive V8 engines. ( Some V6 that came with the two piece maniflold/elbow )
  • ☛ For 1998 and newer engines, there are some 1996 and 1997 models that apply. There will be two rectangular holes for the grommets. If your Y-pipe...
  • ☛ If you have ever overheated these tend to get damaged. Sometimes you will find pieces of them in the exhaust when you remove the drive for...
  • ☛ Please check pictures and description for more details, and check your part number and our fitment before placing an order.
Bestseller No. 18
CARMOCAR 2.5 inch Electric Exhaust Control E-Cut Out Valve System Electric Cutout Y Pipe With Switch...
  • 🚚SIZE:Inlet/ Major Piping Diameters: 2.5" (63mm).
  • 🚚UNIVERASL APPLICATION:fit for cars with 2.5 inlet exhaust pipes.
  • 🚚ELECTRICALLY CONTROLLED EXHAUST VALVES:simply flow with a knob on the remote control, designed to increase power 10-20 depending on application.
  • 🚚PIPINGS:Made of High Quality T-304 Stainless Steel with Computerized Mandrel-Bends for Strength and Durability.
  • 🚚ABOUT SERVICE:Durable and long lasting 2.5 inch exhaust control ,the customer service period is 1 year.Note: Please check the display pictures and...
SaleBestseller No. 19
T-H Marine FSRK-3-DP Scupper Flapper Repair Kit - Black
  • Constructed of thermoplastic elastomer
  • Do not curl like rubber flappers
  • Repairs most scuppers with flappers, regardless of manufacturer
  • Kit contains all parts needed to repair 2 scuppers
  • Each kit contains 2 each of: 1 1/2"flappers and 1 3/4" flappers, and all necessary keepers and fasteners
SaleBestseller No. 20
Fluidmaster 5403 Water-Saving Long Life Toilet Flapper for 3-Inch Flush Valves, Adjustable Solid...
  • Size: 3 Inch.LONG-LASTING DURABILITY: Toilet flapper with solid frame and kink-free chain replaces leaky, corroded flappers, preventing twisting,...
  • UNIVERSAL DESIGN: Adjustable flapper fits most 3-inch flush valve toilets and is ideal for use in high efficiency 1.28 to 1.6 gallons per flush...
  • ADJUSTABLE TO SAVE WATER: Dial flapper adjusts for maximum flush efficiency and to save water
  • SILICONE SEAL: Durable silicone seal lasts 10X longer than regular flappers and resists chlorine and hard water
  • Solid frame for the best seal- no twisting.

Having trouble finding a great Exhaust Flapper Valve?

This problem is well understood by us because we have gone through the entire Exhaust Flapper Valve research process ourselves, which is why we have put together a comprehensive list of the best Exhaust Flapper Valves available in the market today.

After hours of searching and using all the models on the market, we have found the best Exhaust Flapper Valve for 2023. See our ranking below!

How Do You Buy The Best Exhaust Flapper Valve?

Do you get stressed out thinking about shopping for a great Exhaust Flapper Valve? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching Exhaust Flapper Valve, which is why we have assembled a comprehensive list of the greatest Exhaust Flapper Valve available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for Exhaust Flapper Valve that you consider buying. Your questions might include the following:

  • Is it worth buying an Exhaust Flapper Valve?
  • What benefits are there with buying an Exhaust Flapper Valve?
  • What factors deserve consideration when shopping for an effective Exhaust Flapper Valve?
  • Why is it crucial to invest in any Exhaust Flapper Valve, much less the best one?
  • Which Exhaust Flapper Valve are good in the current market?
  • Where can you find information like this about Exhaust Flapper Valve?

We’re convinced that you likely have far more questions than just these regarding Exhaust Flapper Valve, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for Exhaust Flapper Valve, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible Exhaust Flapper Valve. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an Exhaust Flapper Valve 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 Exhaust Flapper Valve currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of Exhaust Flapper Valve 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.
  2. Features: What bells and whistles matter for an Exhaust Flapper Valve?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your Exhaust Flapper Valve.
  5. Customer Ratings: Number ratings grade Exhaust Flapper Valve objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their Exhaust Flapper Valve.
  7. Product Quality: You don’t always get what you pay for with an Exhaust Flapper Valve, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an Exhaust Flapper Valve is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining Exhaust Flapper Valve information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding Exhaust Flapper Valve is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

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FAQ:

Q: What does the Flapper on the exhaust manifold do?

A: For vessels with through-the-transom exhaust, there are flapper valves that prevent following seas from running back up the exhaust system and flooding the engine. They clamp around the outside diameter of an exhaust pipe to form a check valve.

Q: Why is exhaust valve smaller than intake valve?

A: The reason the exhaust valves are smaller is because the smaller pressure difference over the intake valves. It’s the pressure diference over the valves that drives the flow, and the pressure difference is greater on the exhaust side.

Q: What valve is larger the intake or exhaust?

A: Intake valve size + exhaust valve size must be less than the size of the bore. If the exhaust valve diameter + intake valve diameter is bigger than the bore, one of those valves is hitting the deck of the block and not opening at all.

Q: What is exhaust pipe flange gasket?

A: An exhaust flange gasket is a round gasket that is commonly called a donut gasket. This gasket is often used to prevent exhaust leaks between the cast-iron exhaust manifold and the exhaust pipe of an automobile or truck.