1998 Mercury Mountaineer Performance Engines

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Keep Your 1998 Mercury Mountaineer in Top Shape with Quality Performance Engines

Whether you’re repairing or upgrading your Performance Engine, using high-quality parts is key to keeping your 1998 Mercury Mountaineer looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Water Outlets, Performance Engine Valve Cover Gasket Sets, and Performance Engine Intake Manifold Gaskets. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Performance Engines from Trusted Brands

Looking for a reliable Performance Engine? We’ve got you covered with options from brands you know and trust like FEL-PRO Performance. For example, FEL-PRO Performance Performance Engines start at just $35.99 with an average 4.2 star rating. With over 18 reviews and a solid 4 star average, you can shop with confidence knowing other Mercury Mountaineer owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1998 Mercury Mountaineer Performance Engine at Advance Auto Parts is around $180.32, with a range that starts at $7.99 and goes up to $815.99. With 24 options in stock from 4 trusted brands, finding the right fit is easy. Popular picks like Ultra Seal: Harmonic Balancer Bolt/Washer Kit, Front Timing Cover Gasket Set #6991 For Small-Block Ford, With Front Seal, and ROCKER ARMS, DIE CAST ALUM SMALL BLOCK FORD 1.6 1 ST start at just $30.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Performance Engine, don’t forget to check out other key components like Performance Ignition Products and Programmers. At Advance Auto Parts, we’re here to help you keep your 1998 Mercury Mountaineer in peak condition, inside and out.

Essential 1998 Mercury Mountaineer Performance Engines

Mr. Gasket – Water Neck (Part No.2662)

Water Neck

from

$23.79
Precision die cast, these water necks are first polished to a high luster, then chrome plated. Features an O-ring style seal to prevent water leaks. Comes with O-ring gasket and mounting bolts.

Product Features:
  • Chrome Plated
  • This Is A 45 Degree Neck
  • Comes With O-ring And Bolts
  • Has Small Hose Fitting On It
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Edelbrock – Performer Series Retainer (Qty 16) (Part No.9733)

Performer Series Retainer (Qty 16)

from

$141.99
Valve spring retainers for use OE cast iron heads. Superior quality heat-treated steel. Machined for strength with black oxide finish. Finish ensures rust and corrosion protection.

Product Features:
  • Valve Spring Retainers for Use OE Cast Iron Heads
  • Superior Quality Heat-Treated Steel
  • Machined for Strength with Black Oxide Finish
  • Finish Ensures Rust and Corrosion Protection
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Competition Cams – ROCKER ARMS, DIE CAST ALUM SMALL BLOCK FORD 1.6 1 ST (Part No.17043-16)

ROCKER ARMS, DIE CAST ALUM SMALL BLOCK FORD 1.6 1 ST

from

$249.99
The COMP Cams High Energy Die-Cast Aluminum Roller Rocker Arms are new rocker arms from the valve train leader that have been designed for street and moderate race use. They feature a die-cast body created from aluminum with a needle bearing fulcrum and roller tip. The die-cast, larger than stock body offers the strength properties and light weight of aluminum while the specially engineered fulcrum and roller tip decrease friction and lower oil temperatures, thus improving response and horsepower.

Product Features:
  • Cost effective aluminum construction provides superior strength to weight ratio
  • Needle bearing fulcrum and roller tip reduce friction and lower oil temperatures for improved response and horsepower
  • Durable design increases valve lift while withstanding the rigors of moderate race use
  • Die-formed aluminum body is larger than stock, and may require modifications to stock valve covers for clearance.
See More

Mr. Gasket – Ultra Seal: Harmonic Balancer Bolt/Washer Kit (Part No.7847)

Ultra Seal: Harmonic Balancer Bolt/Washer Kit

from

$45.49
Mr. Gasket Harmonic Balancer Bolt for Ford V8 except 351C. Fits 221,260,289,302,351W small block Windsor engines, 332,352,360,390,406,410,427,428 FEs, and 429,460 385 series big blocks. 5/8-18 x 2 inch long heat treated black oxide coated Grade 8 alloy steel with a thick parallel ground washer to provide accurate, uniform torque.

Product Features:
  • Heat treated black oxide coated Grade 8 alloy steel
  • Thick parallel ground washer provides more accurate, uniform torque
  • Hex Prevents Socket Slippage
  • Accurate And Uniform Torque
  • Black Plated Finish
See More

FEL-PRO Performance – Engine Valve Cover Gasket Set (Part No.1684)

Engine Valve Cover Gasket Set

from

$50.99
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

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.
See More

Edelbrock – Front Timing Cover Gasket Set #6991 For Small-Block Ford, With Front Seal (Part No.6991)

Front Timing Cover Gasket Set #6991 For Small-Block Ford, With Front Seal

from

$30.99
Available in kits including front cover gasket, crankshaft seal, fuel pump and water pump gasket or including cover gasket and front seal.

Product Features:
  • Timing Cover Gasket And Oil Seal Kit
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FEL-PRO Performance – Engine Crankshaft Seal Kit (Part No.2941)

Engine Crankshaft Seal Kit

from

$49.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • PTFE offers the best in fluid and high-temperature compatibility and contact sealing surface can run on undersize shafts, seal minor imperfections and virtually eliminate shaft wear.
  • Optimizes performance under high crankcase vacuum conditions, elevated temperatures and high RPM levels.
  • Not intended for use in emission controlled vehicles.
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Competition Cams – High Energy 215/224 Hydraulic Roller Cam for Ford 4.0L 6 Cylinder (Part No.49-422-8)

High Energy 215/224 Hydraulic Roller Cam for Ford 4.0L 6 Cylinder

from

$815.99
High Energy 215/224 Hydraulic Roller Cam for Ford 4.0L 6 Cylinder

Competition Cams – Xfi Spr Blower 229/240 Hydraulic Roller Cams For Ford 4.6/5.4L Modular 3 Valve (Part No.127450)

Xfi Spr Blower 229/240 Hydraulic Roller Cams For Ford 4.6/5.4L Modular 3 Valve

from

$1230.00
COMP Cams 127450 is a high-performance camshaft set from the XFI SPR series, engineered for Ford 4.6L and 5.4L Modular 3-Valve engines. It delivers aggressive mid-to-high RPM horsepower gains, an extended usable RPM range up to 6,700, and a distinctive lopey idle-perfect for street/strip builds with blower setups.
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Competition Cams – Xfi Spr 237/244 Hydraulic Roller Cams For Ford 4.6/5.4L Modular 3 Valve (Part No.127600)

Xfi Spr 237/244 Hydraulic Roller Cams For Ford 4.6/5.4L Modular 3 Valve

from

$1230.00
Max effort street/strip cam with very rough idle, needs ported heads. Good midrange with incredible power up to 7000+ RPM. Solid power gains above 4900 RPM. Spring/phaser upgrade and custom tuning required. 4.10+ gears and 3200+ stall.

Product Features:
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Competition Cams – Xfi Spr 221/228 Hydraulic Roller Cams For Ford 4.6/5.4L Modular 3 Valve (Part No.127400)

Xfi Spr 221/228 Hydraulic Roller Cams For Ford 4.6/5.4L Modular 3 Valve

from

$1230.00
Powerful cam with great idle, excellent upgrade over stock. Good torque down low with powerful mid-range. Solid power gains above 4500 RPM, requires spring and phaser upgrade. Requires custom tuning. Stock gears and converter ok.

Product Features:
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Competition Cams – Xfi Vsr Blower 222/239 Hydraulic Roller Cams For Ford 4.6/5.4L Modular 3 Valve (Part No.127350)

Xfi Vsr Blower 222/239 Hydraulic Roller Cams For Ford 4.6/5.4L Modular 3 Valve

from

$1230.00
Mid to upper range cam for bolt-on blowers with high boost. Noticeable idle, solid power gains above 4900 RPM, requires spring upgrade. Best with 3000+ stall. Requires custom tuning.

Product Features:
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Competition Cams – Xfi Vsr 222/235 Hydraulic Roller Cams For Ford 4.6/5.4L Modular 3 Valve (Part No.127300)

Xfi Vsr 222/235 Hydraulic Roller Cams For Ford 4.6/5.4L Modular 3 Valve

from

$1161.00
Serious street cam, noticeable idle. Solid power gains above 4600 RPM, requires spring upgrade. Works with tuners, recommend custom tuning. Best with 3.90 gears and 3000 stall.

Product Features:
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Competition Cams – Xtreme Energy 226/230 Cams For Ford 4.6/5.4L Modular 2 Valve With Pi Heads (Part No.102500)

Xtreme Energy 226/230 Cams For Ford 4.6/5.4L Modular 2 Valve With Pi Heads

from

$1041.00
Excellent torque. Better low and mid-range torque with more power. Will work with stock computer, best with custom tuning.

Product Features:
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Edelbrock – Pushrod Set for Small Block Ford 289-302 V-8, Black Oxide finish (Part No.9632)

Pushrod Set for Small Block Ford 289-302 V-8, Black Oxide finish

from

$221.99
Product Features:
  • Case-Hardened Tubing
  • Surface Hardening
  • Welded Ends
  • 0.3125 in. Diameter
  • Use with or without Hardened Steel Guideplates
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Edelbrock – Pushrod Set for Ford 289-302 (Part No.9658)

Pushrod Set for Ford 289-302

from

$216.99
Edelbrock part #9658 Pushrods are designed for small-block Ford 289-302 V-8 engine applications. These one-piece pushrods are manufactured from high quality 4130 Chromoly steel tubing that has been surface hardened for maximum durability. They have precis

Product Features:
  • 6.43 in. Length
  • 0.312 in. Diameter
  • 4130 Chromoly Steel Material
  • Black Oxide Finish
  • Made In The USA
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FEL-PRO Performance – Lower Intake Manifold Gasket Set: 11 Piece Set (Part No.1250)

Lower Intake Manifold Gasket Set: 11 Piece Set

from

$35.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • DESIGNED FOR IMPERFECT SEALING SURFACES — Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
  • SEALING TECHNOLOGIES — Exclusive sealing innovations and technologies with proprietary materials and unique design features to ensure a superior seal for your repair
  • ENGINEERING EXPERTISE — Parts are designed, reviewed, validated and approved by Fel-Pro engineers through rigorous research and development
  • REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road
  • EVERY PART FOR THE REPAIR — Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
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Most Popular Performance Water Outlet for 1998 Mercury Mountaineers

Enhance your 1998 Mercury Mountaineer with this popular Performance Water Outlet we have in stock, for $23.79.

Mr. Gasket – Water Neck (Part No.2662)

Water Neck

from

$23.79
Precision die cast, these water necks are first polished to a high luster, then chrome plated. Features an O-ring style seal to prevent water leaks. Comes with O-ring gasket and mounting bolts.

Product Features:
  • Chrome Plated
  • This Is A 45 Degree Neck
  • Comes With O-ring And Bolts
  • Has Small Hose Fitting On It
See More

Best-Selling 1998 Mercury Mountaineer Performance Engine Valve Cover Gasket Set

Upgrade your Mountaineer with our best-selling Performance Engine Valve Cover Gasket Set with a 5 Starts rating across 1 review.

FEL-PRO Performance – Engine Valve Cover Gasket Set (Part No.1684)

Engine Valve Cover Gasket Set

from

$50.99
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

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.
See More

Top-Quality Performance Engine Intake Manifold Gaskets for 1998 Mercury Mountaineers

Choose a high-quality OEM or aftermarket Performance Engine Intake Manifold Gasket for Mercury Mountaineers and enjoy top-notch performance from $35.99.

FEL-PRO Performance – Lower Intake Manifold Gasket Set: 11 Piece Set (Part No.1250)

Lower Intake Manifold Gasket Set: 11 Piece Set

from

$35.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • DESIGNED FOR IMPERFECT SEALING SURFACES — Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
  • SEALING TECHNOLOGIES — Exclusive sealing innovations and technologies with proprietary materials and unique design features to ensure a superior seal for your repair
  • ENGINEERING EXPERTISE — Parts are designed, reviewed, validated and approved by Fel-Pro engineers through rigorous research and development
  • REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road
  • EVERY PART FOR THE REPAIR — Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
See More

Top Picks for 1998 Mercury Mountaineer Performance Engine Rocker Arms

Invest in one of our 8 durable Performance Engine Rocker Arms for your 1998 Mercury, knowing you’re getting trusted brands and expert craftsmanship.

Competition Cams – ROCKER ARMS, DIE CAST ALUM SMALL BLOCK FORD 1.6 1 ST (Part No.17043-16)

ROCKER ARMS, DIE CAST ALUM SMALL BLOCK FORD 1.6 1 ST

from

$249.99
The COMP Cams High Energy Die-Cast Aluminum Roller Rocker Arms are new rocker arms from the valve train leader that have been designed for street and moderate race use. They feature a die-cast body created from aluminum with a needle bearing fulcrum and roller tip. The die-cast, larger than stock body offers the strength properties and light weight of aluminum while the specially engineered fulcrum and roller tip decrease friction and lower oil temperatures, thus improving response and horsepower.

Product Features:
  • Cost effective aluminum construction provides superior strength to weight ratio
  • Needle bearing fulcrum and roller tip reduce friction and lower oil temperatures for improved response and horsepower
  • Durable design increases valve lift while withstanding the rigors of moderate race use
  • Die-formed aluminum body is larger than stock, and may require modifications to stock valve covers for clearance.
See More

Competition Cams – Ultra-Gold ARC Rocker Set with 1.72 Ratio for Ford 289-351W with 7/16" Stud (Part No.19049-16)

Ultra-Gold ARC Rocker Set with 1.72 Ratio for Ford 289-351W with 7/16" Stud

from

$621.99
Ultra-Gold ARC Rocker Set with 1.72 Ratio for Ford 289-351W with 7/16" Stud

Competition Cams – Ultra-Gold ARC Rocker Set with 1.72 Ratio for Ford 289-351W with 3/8" Stud (Part No.19048-16)

Ultra-Gold ARC Rocker Set with 1.72 Ratio for Ford 289-351W with 3/8" Stud

from

$582.99
Ultra-Gold ARC Rocker Set with 1.72 Ratio for Ford 289-351W with 3/8" Stud

Competition Cams – High Energy Aluminum 1.6 Ratio Roller Rocker Set of 8 AMC, SBF, Olds 7/16" Stud (Part No.17044-8)

High Energy Aluminum 1.6 Ratio Roller Rocker Set of 8 AMC, SBF, Olds 7/16" Stud

from

$148.99
Four decades after its founding, COMP Cams keeps its focus on producing the highest-performing products possible, providing superior customer service and leading the industry in technological development. That commitment continues to resonate with racers, engine builders and enthusiasts worldwide, making COMP Cams the preferred choice for valve train components. COMP Cams is unrivaled thanks to its engineering staff – the largest and most highly trained in the performance aftermarket industry – sophisticated manufacturing processes, expert technicians and real-world testing on the track and street. The company’s integration of research, engineering and development, coupled with the free technical assistance it offers customers, makes it the Absolute Leader in Valve Train Technology.

Product Features:
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Competition Cams – Ultra-Gold ARC Rocker with 1.72 Ratio for Ford 289-351W with 7/16" Stud (Part No.19049-1)

Ultra-Gold ARC Rocker with 1.72 Ratio for Ford 289-351W with 7/16" Stud

from

$59.99
Ultra-Gold ARC Rocker with 1.72 Ratio for Ford 289-351W with 7/16" Stud

Competition Cams – Ultra-Gold ARC Rocker with 1.72 Ratio for Ford 289-351W with 3/8" Stud (Part No.19048-1)

Ultra-Gold ARC Rocker with 1.72 Ratio for Ford 289-351W with 3/8" Stud

from

$56.99
Ultra-Gold ARC Rocker with 1.72 Ratio for Ford 289-351W with 3/8" Stud

Competition Cams – Ultra-Gold ARC Rocker with 1.6 Ratio for Ford 289-351W with 3/8" Stud (Part No.19043-1)

Ultra-Gold ARC Rocker with 1.6 Ratio for Ford 289-351W with 3/8" Stud

from

$46.49
Ultra-Gold ARC Rocker with 1.6 Ratio for Ford 289-351W with 3/8" Stud

Competition Cams – High Energy Aluminum 1.6 Ratio Roller Rocker for AMC, SBF, Olds with 7/16" Stud (Part No.17044-1)

High Energy Aluminum 1.6 Ratio Roller Rocker for AMC, SBF, Olds with 7/16" Stud

from

$27.99
With a needle bearing fulcrum and a roller tip, our die cast aluminum rockers decrease friction and improve horsepower. This self-aligning 1.6 rocker fits AMC 290-401, Ford 289-351W and Olds 260-455 w/ a 7/16″ stud.

Product Features:
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Our Performance Engine Harmonic Balancers for 1998 Mercury Mountaineers

Make a smart move for your 1998 Mercury Mountaineer with our Performance Engine Harmonic Balancer for $45.49.

Mr. Gasket – Ultra Seal: Harmonic Balancer Bolt/Washer Kit (Part No.7847)

Ultra Seal: Harmonic Balancer Bolt/Washer Kit

from

$45.49
Mr. Gasket Harmonic Balancer Bolt for Ford V8 except 351C. Fits 221,260,289,302,351W small block Windsor engines, 332,352,360,390,406,410,427,428 FEs, and 429,460 385 series big blocks. 5/8-18 x 2 inch long heat treated black oxide coated Grade 8 alloy steel with a thick parallel ground washer to provide accurate, uniform torque.

Product Features:
  • Heat treated black oxide coated Grade 8 alloy steel
  • Thick parallel ground washer provides more accurate, uniform torque
  • Hex Prevents Socket Slippage
  • Accurate And Uniform Torque
  • Black Plated Finish
See More

Top-Rated Performance Engine Brands For Your 1998 Mercury Mountaineer

When it comes to finding the perfect Performance Engine for your 1998 Mercury Mountaineer, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 4 trusted brands. We carry the most popular Performance Engine brands including FEL-PRO Performance, and more, all known for their exceptional customer ratings (average brand rating of 4.2 stars) and competitive prices, as low as $35.99. Purchasing a Performance Engine from us here at Advance Auto Parts is a smart move for both you and your 1998 Mercury Mountaineer, providing peace of mind with parts that meet or exceed OEM standards.

Popular FEL-PRO Performance 1998 Mercury Mountaineer Performance Engines

If you’re looking for a top-quality Performance Engine for your 1998 Mercury Mountaineer, Advance Auto Parts has exactly what you need with our selection of FEL-PRO Performance Performance Engines. We have 2 FEL-PRO Performance Performance Engines in stock for this fitment, all known for their durability and precision fit. With prices starting at just $35.99 and an average cost of $43.49, you’ll find the perfect Performance Engine for your needs and budget. FEL-PRO Performance Performance Engines for the 1998 Mercury Mountaineer come highly rated, with over 5 customer reviews and an impressive average rating of 4.2 stars. Choosing a FEL-PRO Performance Performance Engine from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Lower Intake Manifold Gasket Set: 11 Piece Set
from $35.99
(4)
Lower Intake Manifold Gasket Set: 11 Piece Set
“Great overall intake gasket!!”
Engine Valve Cover Gasket Set
from $50.99
(1)
Engine Valve Cover Gasket Set
“good”

FAQs for 1998 Mercury Mountaineer Performance Engines

What are the best-selling Performance Engines for 1998 Mercury Mountaineers?

Out of 24 Performance Engines that fit 1998 Mercury Mountaineers, the following parts are the top sellers:

What’s the price range for 1998 Mercury Mountaineer Performance Engines?

The prices of Performance Engines for the 1998 Mercury Mountaineer range from $7.99 up to $815.99 for the most premium parts.

What is the average price of a Performance Engine for a 1998 Mercury Mountaineer?

The average price for Performance Engines for the 1998 Mercury Mountaineer is $180.32. Keep in mind the variety of part types within our Performance Engine category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Performance Engines for other Mercury Mountaineer model years?

Yes, we carry Performance Engines for 12 model years of Mercury Mountaineers between 1997 and 2010. The following model years are the most popular for Performance Engine purchases: 2010, 2009, 2008, 2007, 2006, 2005, 2004, 2003, and 2002.

What are the cheapest Performance Engines for my 1998 Mercury Mountaineer?

What are the top-rated Performance Engines that fit the 1998 Mercury Mountaineer?

The one 1998 Mercury Mountaineer Performance Engine we have in stock is the Flat 1 Piece Guide Plate for Ford 289-351W with 5/16" Pushrod and 7/16" Stud. It costs $7.99.

What types of Performance Engines do you sell for my 1998 Mercury Mountaineer?

As of 6/2/26, these are some of the most in-demand types of Performance Engines for a 1998 Mercury Mountaineer:

Can I get help with 1998 Mercury Mountaineer Performance Engine orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Mercury Performance Engines and more.

What is your return policy for Mercury Mountaineer Performance Engines?

Advance Auto Parts keeps returns simple. For new Mercury Mountaineer Performance Engines and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.