Mr Gasket Fuel Pump 12S

If you’re looking to upgrade or replace the fuel pump in your vehicle, the Mr Gasket Fuel Pump 12S is an excellent high-performance option to consider. With exceptional flow rate and pressure capabilities, this electric fuel pump can give your engine the extra power it needs.

In this comprehensive buying guide, we’ll cover everything you need to know about the Mr Gasket 12S fuel pump to determine if it’s the right choice for your vehicle. We’ll discuss:

• Specifications and features
• Compatibility
• Benefits and improvements
• Where to buy
• Cost
• Installation
• Maintenance
• Troubleshooting
• And much more!

Whether you’re looking to install a new fuel pump in your classic muscle car or import tuner, the insights in this guide will help you make an informed decision about the Mr Gasket 12S.

An Overview of the Mr Gasket Fuel Pump 12S

The Mr Gasket 12S is an in-line electric fuel pump designed to deliver high flow rate and pressure for optimal engine performance.

Specifications include:

• Flow rate of 90 gallons per hour
• Operating pressure of 6-8 PSI
• 12 volt DC operation
• Draws 15 amps max
• Inlet/outlet size of -6 AN fitting
• High quality aluminum and stainless steel construction

With a rugged, compact design, the Mr Gasket 12S pump is intended for carbureted engines in street/strip and racing applications. The free-flowing pump helps ensure consistent pressure and volume for crisp response across the RPM range.

The 12S fuel pump is made in the United States and backed by Mr Gasket’s reputation for quality and performance in fuel system components. The pump is designed to last through years of street, drag strip, or circuit use.

What Vehicles is the Mr Gasket Fuel Pump 12S Compatible With?

The Mr Gasket 12S is recommended for 4, 6, and 8 cylinder carbureted engines in domestic classic cars and trucks as well as import tuner vehicles.

It has excellent compatibility with popular muscle cars like:

• Ford Mustang
• Chevrolet Camaro
• Dodge Challenger
• Pontiac GTO
• AMC Javelin

The 12S fuel pump also works well with JDM import tuners including:

• Nissan 240SX
• Toyota Supra
• Mazda RX-7
• Honda Civic
• Mitsubishi Eclipse

The pump can handle engines making up to 600 horsepower, making it suitable for moderately powered street/strip builds as well as some racing engines.

The 12S has -6 AN inlet/outlet fittings, so it may require additional fittings or line sizing changes to work with some fuel systems. Always check for compatibility before purchase and installation.

How Does the Mr Gasket Fuel Pump 12S Improve Performance?

There are a few key ways installing a Mr Gasket 12S fuel pump can provide performance benefits:

• Higher flow rate – The 90 GPH rating means more fuel delivery capacity. This supports more horsepower and allows the engine to breathe easier at higher RPMs.
• Consistent pressure – The pump maintains 6-8 PSI to help ensure strong, steady delivery without fluctuation or weak low-end pressure.
• Volume on demand – The 12S is designed to ramp up fuel volume as engine demand increases. This dynamic delivery prevents lean conditions if flow from the tank can’t keep up.
• Priming capability – Many high-flow pumps struggle with initial start-up priming. The Mr Gasket 12S has strong self-priming abilities for quick starts.
• Works at any angle – Thanks to the internal design, the 12S pump can mount at steep angles and still run reliably. Critical for some custom installs.

Overall, the Mr Gasket fuel pump is a great way to address limitations from old, worn-out pumps in aging vehicles. It can really wake up an engine and allow it to run optimally.

Where to Buy a Genuine Mr Gasket 12S Fuel Pump

Mr Gasket fuel pumps are widely available online through retailers that specialize in performance parts and accessories.

Some good options to check include:

• Summit Racing – Large online parts store with competitive pricing, quick shipping, and great customer service.
• Jegs – Another trusted online retailer for performance equipment. Frequent sales events and promotions.
• Amazon – Convenient shopping and free shipping with Prime. Double check you get an authorized seller.
• CARiD – Big selection of brands and auto parts. Easy returns and free shipping on many purchases.
• Walmart – Surprisingly good source for Mr Gasket pumps, especially with free store pickup. Limited selection though.

For the best deal, check multiple sites for current pricing and availability. Sale events around holidays can offer significant savings on the 12S pump.

Always verify the listing shows “Mr Gasket” as the brand and confirms it’s the 12S model before purchasing. Avoid generic or counterfeit pumps from sketchy sellers.

How Much Does the Mr Gasket Fuel Pump 12S Cost?

The retail price for a new Mr Gasket 12S fuel pump generally ranges from $90 to $150 depending on the retailer and any current sale pricing.

Here are some example prices at major online stores:

• Summit Racing – $119.99
• Jegs – $139.99
• Amazon – $89.99
• Walmart – $97.99

Keep in mind costs for any additional fittings needed to adapt the pump to your fuel line connections. It’s a good idea to budget $50 to $100 in parts for a typical install.

Also consider the tool cost if you need to rent or purchase any specialty fuel line tools. This can add $20 to $60 or more, depending on the required tools.

While not the cheapest inline fuel pump available, the Mr Gasket 12S offers quality construction and reliable performance that can save money in the long run versus cheaper pumps that fail quickly.

Step-By-Step Installation of the Mr Gasket Fuel Pump

Properly installing the Mr Gasket 12S fuel pump is important for safety and optimal performance. Here is an overview of the key steps:

Step 1 – Disconnect Power and Relieve Fuel Pressure

• Disconnect the negative battery cable.
• Start the engine and let it stall to relieve fuel system pressure.
• Disconnect the fuel lines from the existing pump. Capture any spilled fuel.

Step 2 – Mount the New Pump

• Select a mounting location for the 12S pump, like the chassis frame rail.
• Ideally the pump inlet should be lower than the fuel tank and outlet above the engine fuel rail or carburetor.
• Use the provided mounting brackets. Rubber isolators help reduce noise and vibration.

Step 3 – Connect Fuel Lines

• Attach the fuel feed line from the tank to the 12S pump inlet.
• Connect the outlet to the carb or fuel rail using -6 AN lines and fittings.
• Use thread sealant on all fittings to prevent leaks.

Step 4 – Wire the Pump

• Run a 12 gauge wire from the pump to the positive terminal on the battery or a fused power source.
• Connect the pump’s ground wire to a chassis ground point.
• Install a 15 amp inline fuse within 18″ of the power source.

Step 5 – Reconnect Power and Check for Leaks

• Reconnect the negative battery cable.
• Turn the key to the ON position WITHOUT starting the engine. The pump should prime and pressurize the system.
• Carefully inspect all fuel line connections for any sign of leaks. Tighten or adjust fittings as needed.

Step 6 – Start Engine and Validate Performance

• With adequate fuel pressure verified and no leaks found, go ahead and start the engine.
• Allow it to reach full operating temperature and rev through the RPM range to ensure proper fuel delivery.
• Verify the pump maintains consistent pressure through the range.
• Shut down and check for any new leaks before enjoying your upgraded fuel system!

Proper installation is critical, so don’t skip any fuel safety precautions. And take the time to check for leaks and confirm pressure. Enjoy that new found power!

Maintenance Tips for the Mr Gasket Fuel Pump

The Mr Gasket 12S pump is built to provide years of lasting performance. But like any component, it requires basic maintenance for optimal longevity.

Follow these tips to keep your fuel pump in peak operating condition:

• Use fuel stabilizer – Add stabilizer to the gas tank when storing the vehicle to prevent varnish buildup inside the pump.
• Change the fuel filter – A restricted filter forces the pump to work harder. Change it at least annually or more often if performance suffers.
• Check the power connections – Inspect the power and ground wires for corrosion or damage. Clean and repace as needed to avoid problems.
• Listen for excessive noise – If the pump starts getting excessively noisy, it could indicate wear. Plan for a rebuild or replacement.
• Consider an oil pressure safety switch – This will shut off the pump in case of an accident to prevent fires. A smart safety addition.
• Annual bench testing – Remove the pump once a year, hook it to a test power supply, and check that it meets normal pressure specs.

With periodic inspection and care, the Mr Gasket fuel pump will deliver reliable fuel system performance for thousands of miles.

Diagnosing and Fixing Common Mr Gasket 12S Fuel Pump Problems

Even quality fuel pumps like the Mr Gasket 12S can sometimes develop problems. Here are some common issues and fixes:

Problem: Pump fails to prime at start up

Fix: Check for clogged inlet screen or restrictions in the fuel line. Clean inlet, replace fuel filters, and verify adequate voltage at the pump.

Problem: Pump fails to reach or hold proper pressure

Fix: Listen for whining/grinding noises that can indicate a worn pump. Test amp draw and outlet pressure. Rebuild or replace if needed.

Problem: Fuel leaks from pump fittings

Fix: Disassemble, clean, and reseal leaky fittings with fresh thread sealer. Or replace faulty fittings.

Problem: Pump cycles rapidly or surges

Fix: Air is entering the system. Inspect all fuel line connections for leaks. Replace worn lines or cracked fittings.

Problem: Frequent pump failure

Fix: Upgrade the power and ground wiring with 8-10 gauge wire and clean connections to avoid voltage drops. Consider adding a capacitor for voltage stabilization.

Proper installation, filtration, and wiring is key to avoiding problems and getting maximum pump life. Always troubleshoot meticulously and fix the true underlying cause rather than just replacing the pump again and again.

Mr Gasket 12S Fuel Pump Reviews and Reputation

The Mr Gasket brand has built a reputation for quality performance parts backed by great customer service. This extends to the 12S fuel pump based on reviews across top retailers.

Here are some examples of positive feedback:

“Pump installed easily and worked flawlessly right out of the box. My 1969 Mustang feeds much better at high RPM now. Would definitely buy Mr Gasket pumps again.”

“Upgraded from an old, weak OEM-style pump to the Mr Gasket 12S. Huge improvement in throttle response and top end power. My 454 big block really comes alive now. Highly recommended upgrade!”

“Fit and finished as expected from Mr Gasket. Primes quick and maintains fuel pressure perfectly at idle and WOT. The aluminum housing looks great too. Would buy again.”

The few negative comments seem to stem from improper wiring or installation faults rather than issues with the pump itself when installed correctly.

Overall, customers agree Mr Gasket lives up to their reputation with the 12S fuel pump delivering great bang for the buck. It’s a smart upgrade choice proven reliable in all types of performance applications.

How Does the Mr Gasket 12S Compare to Other Fuel Pumps?

The Mr Gasket fuel pump compares favorably to other top options from brands like Holley and Aeromotive based on performance, quality, and value:

• Holley Blue: Known for quality but comes at a premium price. The Mr Gasket 12S offers comparable specs for less money.
• Walbro GSS342: Excellent made-in-USA pump but may be overkill for some street cars. The 12S has a better power draw and operating range for most applications.
• Aeromotive A1000: Aeromotive is the gold standard but its A1000 pump costs almost twice as much as the Mr Gasket alternative while offering similar flow and pressure.
• Generic eBay Pumps: Cheap but wildly inconsistent quality. The Mr Gasket 12S is affordable with much higher reliability and performance.

While not the top-shelf choice for all-out race cars, the Mr Gasket pump hits the sweet spot between price and performance for street/strip vehicles. It’s capable of supporting up to 600hp engines.

Concluding Thoughts – Is the Mr Gasket Fuel Pump 12S Right for You?

In this detailed buying guide, we’ve covered everything you need to know to decide if the Mr Gasket 12S fuel pump is the best choice for your vehicle:

• It delivers high flow (90 GPH) and consistent pressure at an affordable price from $90 – $150.
• The 12S pump supports 4, 6, and 8 cylinder engines making up to 600 horsepower, with great compatibility with muscle cars and import tuners.
• Its durable construction and quality engineering from Mr Gasket helps it provide years of lasting performance.

If you need to upgrade from an old, weak OEM pump to something that will keep your performance engine fed with plenty of fuel, the Mr Gasket Fuel Pump 12S is an excellent option that comes highly recommended.

It can provide dramatic improvements in throttle response, power output, and rpm capability compared to a lower-flowing stock replacement pump. And it does so at an affordable price backed by Mr Gasket’s reputation.

Hopefully this guide gave you all the details and tips you need to choose the right fuel pump for your high-performance needs. Let us know if you have any other questions!