1968 Mercury Marquis Performance Engines

Essential 1968 Mercury Marquis Performance Engines

Spectre – Water Neck; 351C (Part No.4735)

Water Neck; 351C

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$28.99
Spectre’s Ford water neck fits Ford 351 Cleveland engines. This water neck has been designed around the OEM specifications and has a chrome plated finish for a lasting look that fits great. This water neck includes bolts and sealing O-ring.

Product Features:
  • Fits Ford 351 Cleveland
  • Includes sealing O-ring and bolts
  • Chrome plated
  • Easy to install
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Spectre – Water Neck; Ford 390-428 (Part No.4736)

Water Neck; Ford 390-428

from

$47.99
Spectre’s Ford water neck fits Ford 390, 427 and 428 engines. This water neck has been designed around the OEM specifications and has a chrome plated finish for a lasting look that fits great. This water neck includes bolts.

Product Features:
  • Fits Ford 390, 427 and 428 engines
  • Includes bolts and gasket
  • Chrome plated
  • Easy to install
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FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1013)

Cylinder Head Gasket: Steel Core Composite, Without Head Bolts

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$58.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • PROPRIETARY COATING – Nonstick anti-friction coating seals small surface imperfections
  • NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
  • SUPERIOR SEAL – Precise embossed Printoseal sealing beads at all vital areas to eliminate leak paths
  • STRONG AND DURABLE – Features graphite or reinforced fiber facing material and steel armor for strength and durability
  • DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
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FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1035)

Cylinder Head Gasket: Steel Core Composite, Without Head Bolts

from

$82.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Fel-Pro Performance head gaskets accommodate the high cylinder pressures and cylinder head movement associated with performance engines.
  • Inserted within a stainless steel armor surrounding each cylinder, wire ring design provides highly concentrated sealing around the combustion chamber.
  • Raises combustion sealing force to roughly three times that of standard head gaskets.
  • Steel wire rings for the greatest combustion seal strength.
  • Not intended for use in emission controlled vehicles.
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FEL-PRO Performance – Lower Intake Manifold Gasket Set: 5 Piece Set (Part No.1246)

Lower Intake Manifold Gasket Set: 5 Piece Set

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$39.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Fel-Pro performance intake manifold gaskets have been tested with virtually all aftermarket cylinder head and intake manifold combinations.
  • Performance intake manifold gaskets designed without a metal core, to allow engine builders to trim the gasket for exact fit on modified ports.
  • Standard and Low riser
  • Printoseal elastomeric sealing beads to provide extra sealing strength around the intake port.
  • Not intended for use in emission controlled vehicles.
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Edelbrock – Intake Manifold Gasket for 1963-1996 Small-Block Fords (Part No.72208)

Intake Manifold Gasket for 1963-1996 Small-Block Fords

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$165.99
Available in different sizes for many different vehicle models/years. Clean positive seal. Embossed silicone bead surrounding the port. Matched to manifolds and cylinder heads. In the early days of the automotive performance industry, you either ran what

Product Features:
  • Clean positive seal
  • Embossed Silicone Bead Surrounding The Port
  • Matched To Manifolds And Cylinder Heads
  • Fits 1963-96 289/302/351W Engines
  • 10-Pack Of Gaskets
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Competition Cams – VALVE SPRINGS, 1.509" DUAL 1 ST (Part No.924-16)

VALVE SPRINGS, 1.509" DUAL 1 ST

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$788.99
Dual Valve Springs from COMP Cams are manufactured from Super Clean wire and subject to extensive quality control testing to deliver a valve spring assembly with superior strength, durability and valve train stability, no matter what the application. The dual spring design creates a stronger valve spring that can easily handle the increased lift found in extreme stress applications. COMP Cams Dual Valve Springs exceed the expectations of today’s engine builders and racers.

Product Features:
  • Seat pressure: 112 lbs. @ 1.900″, Open Pressure: 355 lbs. @ 1.200″
  • O.D.: 1.509″, I.D.: 0.697″
  • Dual valve springs with damper
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Edelbrock – Sure Seat Valve Springs for Ford 351W V8 (Part No.5882)

Sure Seat Valve Springs for Ford 351W V8

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$52.99
Product Features:
  • Non-Rotator Type
  • 1.384 in. Outer Diameter
  • 1.020 in. Inner Diameter
  • 1.020 in. Coil Blind
  • Set of 16
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Competition Cams – VALVE SEALS, TEFLON 3/8" 1 ST (Part No.505-16)

VALVE SEALS, TEFLON 3/8" 1 ST

from

$31.99
COMP Cams offers a complete line of valve stem seals, from the umbrella seals to the positive-stop Teflon seal. These seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The umbrella seal is normally used when a larger-than-stock diameter spring is used, in the case of a double spring, the positive-stop Teflon seal is used. The umbrella seals require no machining, but with the Teflon seal it is necessary to disassemble the heads and machine the top of the guide with a special .530 diameter cutter. Whenever you are planning an engine overhaul or a cam change, don’t forget the valve seals.

Product Features:
  • Work with .530″ guides and 3/8″ valve stem diameter
  • Valve stem oil seals keep unwanted oil from entering the combustion chamber
  • Several different types of valve seals are offered
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Edelbrock – RPM Air-Gap Small Block Ford 351W Intake Manifold (Part No.7581)

RPM Air-Gap Small Block Ford 351W Intake Manifold

from

$468.99
Based on performer RPM-series with unique air gap. Air gap cooler and denser mixture for more power. Designed for 1500 to 6500 RPM. Improve performance on the street or race track. Larger cross-sectional area and taller card flange. Compatibility with large displacement 351W based engines. For 4 bbl carbs. Available in cast, polished and endurashine finish.

Product Features:
  • Based on Performer RPM-Series with Unique Air Gap
  • Air Gap Cooler and Denser Mixture for More Power
  • Designed For 1500 To 6500 RPM
  • Designed For Street And High Performance
  • Larger Cross Sectional Area
  • Taller Carb Flange
  • Compatibility w/Large Displacement 351W Based Eng.
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Edelbrock – Performer RPM Ford Small Block 302 Intake Manifold (Part No.7121)

Performer RPM Ford Small Block 302 Intake Manifold

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$341.99


Product Features:
  • Best for the Ultimate in Street High-Performance
  • Designed for 1500 to 6500 RPM Street-Driven Power
  • Dual-Plane High-Rise Intake w/180 deg Firing Order
  • Produces Incredible Top-End Horsepower
  • Retains Good Throttle Response and Acceleration
  • Larger Plenum and Runners Maximizes Other Upgrades
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Weiand – High-Rise Dual Plane Intake Manifold for Maximum Torque (Part No.8012)

High-Rise Dual Plane Intake Manifold for Maximum Torque

from

$359.99


Product Features:
  • High Rise/Dual Plane Design For Maximum Torque
  • Fully CNC Machined For A Perfect Fit
  • Square Bore Carburetor Flange
  • Exhaust Crossover For Improved Street Drivability
  • Permanent Mold Casting Process
  • Lighter/Smoother/Better Looking
  • More Consistent Castings
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Edelbrock – Performer-Link Adjustable True-Roller Timing Chain Set (Part No.7808)

Performer-Link Adjustable True-Roller Timing Chain Set

from

$80.99


Product Features:
  • Solid Bushing Chain Resists Stretching
  • For Use with Stock or Edelbrock Camshafts
  • Stressproof Steel Crank Gears
  • 3 Keyway Setting Points To Ensure Accurate Timing
  • True Bearing Surface Rolls with the Sprockets
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Edelbrock – Performer-Link Adjustable True-Roller Timing Chain Set (Part No.7821)

Performer-Link Adjustable True-Roller Timing Chain Set

from

$81.99


Product Features:
  • Solid Bushing Chain Resists Stretching
  • For Use with Stock or Edelbrock Camshafts
  • Stressproof Steel Crank Gears
  • 3 Keyway Setting Points To Ensure Accurate Timing
  • True Bearing Surface Rolls with the Sprockets
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Edelbrock – TIMING CHAIN (Part No.7844)

TIMING CHAIN

from

$29.99
Product Features:
  • Timing Chain Only
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Mr. Gasket – High Performance Thermostat (Part No.4365)

High Performance Thermostat

from

$27.49
Mr. Gasket High Performance Thermostats are designed to resist large variations of coolant pressure at high RPM (revolutions per minute). This allows them to fully open at correct temperature consistently regardless of engine RPM. The design also provides the high flow that engines operated a higher RPM need. This thermostat also features a copper/brass construction to further resist corrosion. Mr. Gasket High Performance / High Flow Thermostats are suitable for street, drag race, or oval track applications.

Product Features:
  • Opens At 195 Degrees
  • Designed to Resist Large Variations of Coolant Pressure at High RPM
  • Fully Opens at Correct Temperature Consistently Regardless of Engine RPM
  • For High Performance Street, Drag Race, and Oval Track
  • Copper & Brass Construction – Resists Corrosion
  • High Flow
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Mr. Gasket – High Performance 180 Degree Thermostat for Increased Flow (Part No.4364)

High Performance 180 Degree Thermostat for Increased Flow

from

$26.99
Mr. Gasket High Performance Thermostats are designed to resist large variations of coolant pressure at high RPM (revolutions per minute). This allows them to fully open at correct temperature consistently regardless of engine RPM. The design also provides the high flow that engines operated a higher RPM need. This thermostat also features a copper/brass construction to further resist corrosion. Mr. Gasket High Performance / High Flow Thermostats are suitable for street, drag race, or oval track applications.

Product Features:
  • Opens At 180 Degrees
  • Designed to Resist Large Variations of Coolant Pressure at High RPM
  • Fully Opens at Correct Temperature Consistently Regardless of Engine RPM
  • For High Performance Street, Drag Race, and Oval Track
  • Copper & Brass Construction – Resists Corrosion
  • High Flow
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Edelbrock – Water Pump Ford FE 352-428 1965-76 in Satin Finish (Part No.8805)

Water Pump Ford FE 352-428 1965-76 in Satin Finish

from

$381.99
Maximum cooling for street and racing engines. Internal passages are balanced for maximum flow. Impeller is larger than others for maximum pressure. Impeller vanes dramatically increase flow rates. Equal distribution to both sides of block. Only flows in one direction for optimum efficiency. In the early days of the automotive performance industry, you either ran what was available, or you fabricated something you thought met your needs. Such needs were the building blocks of this industry, and it was through the efforts of many that we have the automotive aftermarket, but it was through the work of one name in particular to which many in the industry owe a great debt, and that name is Edelbrock.

Product Features:
  • Maximum Cooling for Street and Racing Engines
  • Internal Passages Are Balanced for Maximum Flow
  • Impeller is Larger than Others For Max Pressure
  • Impeller Vanes Dramatically Increase Flow Rates
  • Equal Distribution to Both Sides of Block
  • Only Flows in One-Direction for Optimum Efficiency
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Edelbrock – Water Pump for Small-Block Ford 1970-79 351C and 351M/400 in Satin Finish (Part No.8844)

Water Pump for Small-Block Ford 1970-79 351C and 351M/400 in Satin Finish

from

$315.99
Maximum cooling for street and racing engines. Internal passages are balanced for maximum flow. Impeller is larger than others for maximum pressure. Impeller vanes dramatically increase flow rates. Equal distribution to both sides of block. Only flows in one direction for optimum efficiency. In the early days of the automotive performance industry, you either ran what was available, or you fabricated something you thought met your needs. Such needs were the building blocks of this industry, and it was through the efforts of many that we have the automotive aftermarket, but it was through the work of one name in particular to which many in the industry owe a great debt, and that name is Edelbrock.

Product Features:
  • Maximum Cooling for Street and Racing Engines
  • Internal Passages Are Balanced for Maximum Flow
  • Impeller is Larger than Others For Max Pressure
  • Impeller Vanes Dramatically Increase Flow Rates
  • Equal Distribution to Both Sides of Block
  • Only Flows in One-Direction for Optimum Efficiency
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Edelbrock – Water Pump for Small-Block Ford 1970-79 351C and 351M/400 in Polished Finish (Part No.8849)

Water Pump for Small-Block Ford 1970-79 351C and 351M/400 in Polished Finish

from

$451.99
Maximum cooling for street and racing engines. Internal passages are balanced for maximum flow. Impeller is larger than others for maximum pressure. Impeller vanes dramatically increase flow rates. Equal distribution to both sides of block. Only flows in one direction for optimum efficiency. In the early days of the automotive performance industry, you either ran what was available, or you fabricated something you thought met your needs. Such needs were the building blocks of this industry, and it was through the efforts of many that we have the automotive aftermarket, but it was through the work of one name in particular to which many in the industry owe a great debt, and that name is Edelbrock.

Product Features:
  • Maximum Cooling for Street and Racing Engines
  • Internal Passages Are Balanced for Maximum Flow
  • Impeller is Larger than Others For Max Pressure
  • Impeller Vanes Dramatically Increase Flow Rates
  • Equal Distribution to Both Sides of Block
  • Only Flows in One-Direction for Optimum Efficiency
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FEL-PRO Performance – PERFORMANCE OIL PAN GASKET SET (Part No.1817)

PERFORMANCE OIL PAN GASKET SET

from

$27.49
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Felcoid/Plus gaskets have a fiber sheet core and a latex rubber coating to eliminate potential leakage paths. The core material resists crushing and splitting, while providing excellent blowout resistance.
  • With steel core to provide ultimate excellent blowout resistance.
  • Not intended for use in emission controlled vehicles.
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FEL-PRO Performance – PERFORMANCE OIL PAN GASKET SET (Part No.1812)

PERFORMANCE OIL PAN GASKET SET

from

$27.49
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Felcoid/Plus gaskets have a fiber sheet core and a latex rubber coating to eliminate potential leakage paths. The core material resists crushing and splitting, while providing excellent blowout resistance.
  • With steel core to provide ultimate excellent blowout resistance.
  • Not intended for use in emission controlled vehicles.
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Mr. Gasket – Oil Pan Gasket (Part No.290)

Oil Pan Gasket

from

$35.99
Mr. Gasket Performance Oil Pan Gaskets are manufactured from a high-density cork /rubber blend gasket material to provide excellent sealing and durability. For original equipment replacement and high performance street use.

Product Features:
  • Manufactured from high-density cork /rubber blend gasket material
  • Provides excellent sealing and durability
  • For OE replacement and high performance street use
  • Prevents Torque Loss
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Mr. Gasket – Ultra Seal: Oil Pan Gasket (Part No.6683)

Ultra Seal: Oil Pan Gasket

from

$59.19
High performance, race quality gasket with molded rubber coating over a steel core. Steel core provides rigidity and durability, preventing prevent push out while the molded rubber coating helps seal minor oil pan rail irregularities. The one piece design eliminates the need for separate end seals to make installation easier and even further reduce the possibility of oil leakage. Provides excellent sealing and durability. Excellent replacement for stock original equipment, high performance street, drag race and oval track. Includes gasket and new oil pan bolts.

Product Features:
  • Steel core provides rigidity, durability and prevents gasket push out
  • Molded rubber coating seals minor irregularities in pan surface
  • One piece design is easier to install and even less prone to leak
  • Direct replacement suitable for all uses – street, racing, heavy duty
  • Include both gasket and new oil pan bolts
  • No Cork Particles
  • Easy Removal For Disassembly
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FEL-PRO Performance – Engine Valve Cover Gasket Set (Part No.1614)

Engine Valve Cover Gasket Set

from

$25.49
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Die cut silicone rubber gaskets conform to out-of-flat covers
  • Great for on-again/off-again situations
  • Not intended for use in emission controlled vehicles.
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FEL-PRO Performance – Engine Valve Cover Gasket Set (Part No.1684)

Engine Valve Cover Gasket Set

from

$46.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Rigid core, molded silicone rubber gaskets provide for ease of installation, and are great for on-again/off-again situations (like setting valve lash).
  • Features high-tech silicone material for long life, a solid steel core for strength and durability, and stainless steel compression limiters to prevent
  • Not intended for use in emission controlled vehicles.
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Edelbrock – Valve Cover Gasket Set for Ford (Part No.7563)

Valve Cover Gasket Set for Ford

from

$60.99
Product Features:
  • Valve Cover Gasket
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Mr. Gasket – Valve Cover Gasket (Part No.275)

Valve Cover Gasket

from

$42.49
Mr. Gasket Performance Valve Cover Gaskets are high-density cork/rubber blend gaskets that use evenly sized cork particles distributed evenly throughout the rubber binder. The result is a compressible valve cover gasket without leak paths. These gaskets create a positive seal by controlled swelling of the gasket material when exposed to hot engine oil. Provides excellent flange sealing and durability. For original equipment replacement, high performance street, drag race and oval track use.

Product Features:
  • Manufactured from high-density cork/rubber blend gasket material
  • Provides excellent sealing and durability
  • For OE replacement, high performance street, drag race and oval track use
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1968 Mercury Marquis Performance Engines

Maybe you’re in the middle of a full rebuild of that 1968 Mercury Marquis. Maybe you just need a couple of Performance Engines. Either way, Advance Auto Parts has 14 different Performance Engines in our inventory ranging from $26.99 to $875.99. That means you can find the exact parts or products you need to keep that 1968 Mercury Marquis running smoothly.

Performance Engines are only as good as their brand. We stock 5 different brands to make sure you have plenty of trusted parts to choose from for your 1968 Mercury Marquis. Mr. Gasket, FEL-PRO Performance, and Edelbrock are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Performance Engines for your 1968 Mercury Marquis, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 58 reviews in this category, some of the top rated parts include Water Neck; Ford 390-428 with 4.0 stars and Cylinder Head Gasket: Steel Core Composite, Without Head Bolts with 1.0 stars.

So if you’re in the market for aftermarket Performance Engines to keep your 1968 Mercury Marquis rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Performance Engines Brands To Make Your 1968 Mercury Marquis Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1968 Mercury Marquis demands trusted brand parts and products to keep it running. Many trusted brands of Performance Engines make up Advance Auto Parts’ inventory, and all are ready to help make your Marquis the best it can be. Be sure to browse some of our top Performance Engines brands and parts.

Popular Competition Cams Performance Engines

We carry Competition Cams parts in our stock across Performance Engine Valve Stem Seal Sets categories, plus more. For a 1968 Mercury Marquis, our most popular Competition Cams Performance Engines include:
VALVE SEALS, TEFLON 3/8" 1 ST
from $31.99
(1)
VALVE SEALS, TEFLON 3/8" 1 ST
Performance Engine Valve Stem Seal Sets

Top 1968 Mercury Marquis Performance Engines from Mr. Gasket

Mr. Gasket products are another trusted brand when it comes to Performance Engines for your 1968 Mercury Marquis. Popular Mr. Gasket parts include:
High Performance 180 Degree Thermostat for Increased Flow
from $26.99
(20)
High Performance 180 Degree Thermostat for Increased Flow
Performance Engine Coolant Thermostats

FAQs for 1968 Mercury Marquis Performance Engines

What are the most purchased Performance Engines for the 1968 Mercury Marquis?

Out of 14 Performance Engines for the 1968 Mercury Marquis, the most popular in our inventory are:
High Performance Thermostat
from $27.49
This product is not rated
High Performance Thermostat
Performance Engine Coolant Thermostats
PERFORMANCE OIL PAN GASKET SET
from $27.49
This product is not rated
PERFORMANCE OIL PAN GASKET SET
Performance Engine Oil Pan Gaskets
Performer-Link Adjustable True-Roller Timing Chain Set
from $80.99
This product is not rated
Performer-Link Adjustable True-Roller Timing Chain Set
Performance Engine Timing Sets and Components

What are the top-rated 1968 Mercury Marquis Performance Engines?

Top-rated Performance Engines for your 1968 Mercury Marquis based on customer reviews/ratings are:
Water Neck; Ford 390-428
from $47.99
(1)
Water Neck; Ford 390-428
“Excellent web site, delivery, and follow up.”
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
from $41.99
(1)
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
“Had to call and talk to 3 operators 3 separate times to get this straightened out .On item description should say 1 gasket requires 2.”