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For old 2.5L Jeep, AMC, and Dakota owners dealing with ticking leaks, soot marks, exhaust smell, rough four-cylinder sound, or weak hill and trail confidence, SPELAB stainless manifold fixes tired factory-style hardware and restores proper sealing without custom-header cost.

The SPELAB exhaust manifold kit is built as a compatible replacement option for select 1983–2002 AMC, Jeep, and Dodge 2.5L L4 applications commonly cross-referenced with Dorman 674-225. Stainless steel construction, a tubular design, TIG-welded joints, and included installation accessories make it a practical repair-and-refresh choice for older 2.5L vehicles.

This is not a big-horsepower header or race part. It is made for CJ, Cherokee XJ, Comanche MJ, Wrangler YJ/TJ, AMC Eagle, Wagoneer, and Dakota owners who want to fix exhaust leaks, clean up rough engine sound, and keep a simple old four-cylinder rig dependable.

Reference Note: Dorman 674-225 and the listed OE / replacement numbers are used for fitment and cross-reference purposes only. This is a SPELAB product, not a Dorman-branded product.

Why Replace Your 2.5L Jeep, Dodge, or AMC Exhaust Manifold?

The 2.5L four-cylinder platform is simple, affordable, and easy to maintain, but the exhaust manifold still faces decades of heat cycles, vibration, rust, trail movement, and aging hardware. When the manifold starts leaking, a small four-cylinder engine can sound rougher, feel weaker on hills or trails, and produce ticking noises or exhaust smell around the engine bay.

• Helps replace a cracked, leaking, rusted, warped, or damaged 2.5L exhaust manifold
• Supports proper exhaust flow from the cylinder head into the exhaust system
• Helps reduce ticking noises, soot marks, and exhaust smell caused by manifold leaks
• Useful for older AMC, Jeep, and Dodge 2.5L L4 applications
• Designed as a compatible replacement option for applications commonly cross-referenced with Dorman 674-225
• Includes necessary installation accessories for a more complete repair-focused setup

Built for Old 2.5L Jeep and AMC Owners Who Keep Simple Rigs Alive

This manifold is not for owners chasing big horsepower. It is for the kind of owner who values a simple 2.5L Jeep, AMC, or Dakota because it is easy to work on, affordable to maintain, and still useful decades later. Whether the vehicle is a CJ7 used on weekend trails, a CJ8 Scrambler being restored, a Cherokee XJ used as a budget daily, a Comanche MJ project truck, or a Dakota used for light-duty errands, the goal is usually the same: fix the exhaust leak and keep the vehicle dependable.

A 2.5L four-cylinder does not have the same power reserve as a 4.0L inline-six or V8. That means exhaust leaks can feel more noticeable during hill climbs, trail driving, light hauling, or daily commuting. Restoring proper exhaust sealing can help the vehicle sound cleaner, feel more stable under load, and return closer to normal drivability.

What Makes This Application Different?

This product covers a wider old-school 2.5L vehicle group than a typical single-model manifold. It reaches from early AMC and CJ-era vehicles to Cherokee XJ, Comanche MJ, Wagoneer, Wrangler YJ/TJ, and Dodge Dakota applications. That makes fitment confirmation especially important, because many of these vehicles have lived long lives with engine swaps, exhaust repairs, trail modifications, or restoration work.

For these owners, this is best understood as a practical repair and refresh part. It is not a custom race header, not a turbo manifold, and not a promise of big horsepower. It is a stainless steel replacement manifold for old 2.5L vehicles that need proper sealing, cleaner sound, and reliable use.

Key Features and Benefits

• 2.5L L4 Application: Designed for compatible AMC, Jeep, and Dodge 2.5L four-cylinder applications listed in the fitment table.
• Dorman 674-225 Cross-Reference: Commonly cross-referenced with Dorman 674-225 for fitment reference purposes.
• Stainless Steel Construction: Built for durability, heat resistance, and long-term exhaust manifold use.
• Tubular Manifold Design: Helps support smoother exhaust movement compared with restrictive or aging factory-style manifold designs.
• Equal-Length Runners: Designed to help balance exhaust pulses and support consistent exhaust flow.
• Mandrel-Bent Pipes: Helps maintain a smoother internal exhaust path through bends for improved flow efficiency.
• Pressed Head Flanges: Head flanges are flattened by hydraulic press to help improve sealing surface contact and reduce the risk of exhaust leaks.
• Chrome-Plated Flanges: Helps increase corrosion resistance and surface hardness in high-heat operating conditions.
• TIG-Welded Joints: All joints are TIG welded to help resist cracking, vibration fatigue, and long-term wear.
• Installation Accessories Included: Comes with the necessary accessories for installation, making it a more complete replacement option.

Factory Manifold vs. SPELAB Stainless Manifold vs. Custom Header

Most owners of 2.5L CJ, Cherokee, Comanche, Wagoneer, Wrangler, AMC Eagle, or Dakota vehicles are not building extreme race engines. They want a practical repair that fixes exhaust leaks, restores sound, and keeps an older vehicle usable. The SPELAB stainless steel manifold is positioned as a repair-focused upgrade: stronger and cleaner-looking than an aging factory-style manifold, without the cost or complexity of a custom exhaust build.

Option	Best For	Main Advantage	Limitations
Factory-Style Exhaust Manifold	Basic stock repairs and original-style restorations	Simple factory-style function	May be rusted, cracked, restrictive, or less durable after decades of use
SPELAB Stainless Steel Exhaust Manifold	Older Jeep, AMC, and Dakota 2.5L owners repairing leaks or refreshing the exhaust side	Stainless steel construction, tubular design, TIG-welded joints, and included installation accessories	Not a custom race header or big-power upgrade
Custom Exhaust Header	Highly modified engines, custom exhaust routing, or specialty builds	Can be built around a specific engine setup or performance goal	Usually costs more, may require fabrication, and may be unnecessary for most 2.5L daily, trail, or utility vehicles

Bottom Line: For many old 2.5L Jeep, Dodge, and AMC owners, SPELAB offers a practical stainless steel manifold option for fixing exhaust leaks, cleaning up an older engine bay, and keeping a simple four-cylinder vehicle dependable.

Best For

• CJ7 and CJ8 Scrambler Projects: A practical option for 2.5L CJ owners refreshing older exhaust hardware during repair or restoration work.
• Cherokee XJ and Comanche MJ Builds: Useful for budget daily drivers, trail rigs, and project vehicles where exhaust leaks make the 2.5L feel rougher under load.
• Wrangler YJ and TJ 2.5L Owners: A good match for older four-cylinder Wranglers used for light trails, hunting roads, farm paths, or weekend driving.
• AMC Eagle and Wagoneer Owners: Helpful for keeping less common older 2.5L applications on the road with a practical replacement manifold.
• Dodge Dakota Utility Trucks: A repair-focused choice for 1996–2002 Dakota 2.5L owners using the truck for commuting, parts runs, yard work, or light-duty hauling.
• DIY Garage Repairs: Suitable for experienced owners who want to fix exhaust leaks, rusted hardware, and aging manifold issues at home.

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Fitment for AMC, Jeep, and Dodge 2.5L L4 Applications

Make	Model	Years	Engine	Notes
American Motors	Eagle	1983–1984	2.5L L4	Confirm engine and exhaust configuration before ordering
Dodge	Dakota	1996–2002	2.5L L4	Confirm engine and exhaust configuration before ordering
Jeep	Cherokee	1984–2000	2.5L L4	Compatible listed application
Jeep	CJ7	1983–1986	2.5L L4	Compatible listed application
Jeep	CJ8 Scrambler	1983–1985	2.5L L4	Compatible listed application
Jeep	Comanche	1986–1992	2.5L L4	MJ platform
Jeep	Wagoneer	1984–1987	2.5L L4	Confirm engine and exhaust configuration before ordering
Jeep	Wrangler	1987–1995	2.5L L4	YJ platform
Jeep	Wrangler	1997–2002	2.5L L4	TJ platform

OE / Replacement Numbers: 3242625, 33002509, 4713055, 53008860, J3242625

Cross-Reference: Compatible reference for Dorman 674-225 applications.

Fitment Note: Please confirm your vehicle year, make, model, engine, and exhaust configuration before ordering. Fitment can vary by production date, previous repairs, engine swaps, intake/exhaust changes, and restoration history. This product is for compatible 2.5L L4 applications only and is not intended for 4.0L inline-six, V6, or V8 applications.

Need options for other vehicle applications? Click to view more SPELAB exhaust manifold.

Exhaust Manifold Specifications

Specification	Details
Brand	SPELAB
Product Type	Exhaust Manifold Kit
Application	1983–2002 AMC, Jeep, and Dodge 2.5L L4 applications
Cross-Reference	Compatible reference for Dorman 674-225 applications
OE / Replacement Numbers	3242625, 33002509, 4713055, 53008860, J3242625
Application Type	Automobile Exhaust Manifold
Engine	2.5L L4
Material	Stainless Steel
Design	Tubular manifold design
Runner Design	Equal-length runners
Pipe Construction	Mandrel-bent pipes
Flange Treatment	Hydraulic-pressed head flanges with chrome plating
Welding	TIG-welded joints
Included Accessories	Necessary installation accessories included
Certificate	ISO9001:2000

Installation Notes for Older Jeep, AMC, and Dakota Owners

• Designed for experienced DIY installation or professional installation, depending on your tools, mechanical skill level, and the condition of the existing exhaust hardware.
• Confirm your vehicle has the correct 2.5L L4 engine before removing the factory manifold.
• Match the OE / replacement numbers and compare product images with your current manifold before installation.
• Check that all included installation accessories are present before starting the job.
• Older Jeep, AMC, and Dakota vehicles may have rusted, seized, or heat-cycled studs, nuts, and bolts, so allow extra time for removal and preparation.
• Inspect the gasket surface, cylinder head sealing area, exhaust connection, and oxygen sensor location where applicable.
• Check surrounding clearance carefully, especially on vehicles with previous exhaust repairs, engine swaps, suspension changes, or trail-related modifications.
• Use proper torque procedures and follow the vehicle service manual where applicable.
• Always allow the engine and exhaust system to cool completely before removal or installation.

Symptoms of a Worn or Leaking 2.5L Exhaust Manifold

• Ticking or tapping noise near the exhaust manifold area
• Visible soot marks around the manifold or gasket area
• Exhaust smell near the engine bay or cabin area
• Increased exhaust noise during acceleration
• Rougher sound from the 2.5L four-cylinder engine
• Reduced confidence under load, uphill driving, or light trail use
• Cracked, rusted, or heavily corroded manifold surface

Header vs. Manifold: Which Is Better for an Old 2.5L Jeep or Dakota?

A factory-style exhaust manifold is usually focused on simple fitment, durability, and quiet operation. A custom header can be useful for highly modified engines, but many 2.5L Jeep, AMC, and Dakota owners are not chasing extreme horsepower. For older four-cylinder vehicles used as daily drivers, trail rigs, utility trucks, or restoration projects, a stainless steel manifold-style replacement is often the more practical choice.

This product should be viewed as a repair-focused exhaust upgrade that helps restore proper sealing, sound, and exhaust function. Actual performance results depend on engine condition, exhaust setup, intake condition, ignition health, and installation quality.

Important Fitment and Use Note

This product is intended for compatible AMC, Jeep, and Dodge 2.5L L4 applications listed above. Dorman 674-225 and OE / replacement numbers are provided for fitment cross-reference only. This product is not manufactured by, endorsed by, or sold as a Dorman-branded product. Fitment, sound, and final performance may vary depending on vehicle condition, production date, existing exhaust setup, engine swaps, previous repairs, restoration history, and installation quality. Always confirm compatibility before ordering.

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FAQ About This 2.5L Jeep, Dodge, and AMC Exhaust Manifold

Q: Is this manifold a genuine Dorman 674-225 part?
A: No. This is a SPELAB exhaust manifold kit designed as a compatible replacement option for applications commonly cross-referenced with Dorman 674-225. The Dorman number is used for fitment reference only.

Q: What vehicles does this exhaust manifold fit?
A: It is listed for select American Motors Eagle, Dodge Dakota, Jeep Cherokee, Jeep CJ7, Jeep CJ8 Scrambler, Jeep Comanche, Jeep Wagoneer, and Jeep Wrangler 2.5L L4 applications shown in the fitment table.

Q: Will this fit my Jeep CJ7 or CJ8 Scrambler?
A: It is listed for compatible 1983–1986 Jeep CJ7 and 1983–1985 Jeep CJ8 Scrambler applications with the 2.5L L4 engine. Always confirm your current exhaust setup before ordering.

Q: Will this fit my Jeep Cherokee XJ or Comanche MJ?
A: It is listed for compatible 1984–2000 Jeep Cherokee 2.5L and 1986–1992 Jeep Comanche 2.5L applications. Please confirm engine and exhaust configuration before ordering.

Q: Will this fit my Jeep Wrangler YJ or TJ?
A: It is listed for compatible 1987–1995 Jeep Wrangler YJ and 1997–2002 Jeep Wrangler TJ applications with the 2.5L L4 engine.

Q: Will this fit my Dodge Dakota?
A: Yes, it is listed for compatible 1996–2002 Dodge Dakota 2.5L L4 applications. Please confirm the engine and exhaust layout before ordering.

Q: Does this fit a Jeep 4.0L inline-six?
A: No. This product is for compatible 2.5L L4 applications only. It is not intended for Jeep 4.0L inline-six, V6, or V8 applications.

Q: Is this a performance part for making my 2.5L Jeep fast?
A: No. The 2.5L platform is not usually built for big horsepower. This manifold is best viewed as a practical repair and refresh part that helps restore proper exhaust sealing, reduce leaks, and improve normal drivability.

Q: Why does an exhaust leak matter on a 2.5L engine?
A: A small four-cylinder engine has less power reserve than a larger 4.0L inline-six or V8. When the manifold leaks, the vehicle may feel louder, rougher, and less confident on hills, trails, or under load.

Q: What replacement numbers does this manifold reference?
A: Listed replacement numbers include 3242625, 33002509, 4713055, 53008860, J3242625, and Dorman 674-225.

Q: What is this exhaust manifold made from?
A: This SPELAB exhaust manifold is made from stainless steel according to the listed product specifications.

Q: Does this exhaust manifold include installation accessories?
A: Yes. This product includes the necessary installation accessories for a more complete replacement setup. Please check the package contents and product images before installation.

Q: Can I install this exhaust manifold myself?
A: Many experienced DIY owners can install this manifold with the right tools and preparation. Older Jeep, AMC, and Dakota vehicles may have rusted or seized exhaust hardware, so allow extra time and inspect the gasket surface, bolts, studs, and exhaust connection before installation.

Q: Does this manifold require tuning?
A: No. A standard 2.5L exhaust manifold replacement does not generally require tuning.