Our Top 3 Picks
The picks are right below, in order. Everything after them is the reasoning, if you want it.
#1 – M-AUTO Exhaust Manifold Catalytic Converter Jeep Wrangler
Best for: owners of 2007-2009 Jeep Wrangler 3.8L models seeking a direct OE replacement.
- Matches OE Part Number 52059930AH
- $249.88 (premium)
- 3.5 rating from 17 ratings
- Editorial score: 5.7/10
OE Part Number: 52059930AH · Weight: 38.6 pounds
#2 – 674-292 52022459AA Manifold Catalytic Converter
Best for: Ram ProMaster 1500 2500 3500 3.6L V6 owners who prioritize high-flow design.
- Matches OE Part Number 52022459AA
- $205 (mid)
- 4.7 rating from 3 ratings
- Editorial score: 6.8/10
OE Part Number: 674-292, 674-293, 52022458AA, 52022459AA, 68190012AA, 68190013AA, 68190012AB, 68190013AB
#3 – 53189 679-550 679-551 Manifold Catalytic Converter
Best for: Ram 1500 V6 3.6L owners looking for a high-rated, high-flow stainless steel option.
- Matches OE Part Number 53189
- $151 (entry)
- 5.0 rating from 2 ratings
- Editorial score: 8/10
OE Part Number: 53189, 679-550, 679-551, 68249199AA, 68249198AA
If you own a Nissan instead, see how to choose the best exhaust manifold catalytic converter for nissan altima.
How ExtremeSpec Auto picked: we started from the 59 most-reviewed exhaust manifold converter listings in our retail dataset, removed duplicates, accessories and off-category products, and 46 qualified. The picks on this page were selected from those 46 candidates against this topic’s requirements. Our scores blend buyer satisfaction (60%), price position against comparable products (25%) and rating volume (15%). Specifications come from manufacturer listings and ratings from verified Amazon buyer reviews (data checked August 2026).
Our Pick and How the List Was Built
The M-AUTO Exhaust Manifold Catalytic Converter Jeep Wrangler is the top choice because it is the only direct match for the 2007-2009 Jeep Wrangler 3.8L and provides an EPA OBD-II approved replacement.
Finding an exhaust manifold with a converter that matches specific engine block castings can be difficult, and a port mismatch can leave you with a part that bolts to the head but fails to align with the cylinder ports. You need a precise fit to ensure proper exhaust flow and heat management without compromising the integrity of the manifold.
The M-AUTO Exhaust Manifold Catalytic Converter Jeep Wrangler solves this by matching OE Part Number 52059930AH for specific Jeep models. If you require a high-flow design for a Ram 1500 V6 instead, the LoftMarte 53189 679-550 679-551 is a high-performing alternative with a 5.0 rating.
At ExtremeSpec Auto we evaluated the exhaust manifold converter options we track against this topic’s criteria. The shortlist runs from $151 to $249.88, with a median price of $156.35 across the 10 products in our comparison.
Owners of the 2.4L engine can view our full Camry Catalytic Converter review for detailed specifications.
Before you read the rest
- Top pick: M-AUTO Exhaust Manifold Catalytic Converter Jeep Wrangler at $249.88 (OE Part Number: 52059930AH).
- Also picked: 674-292 52022459AA Manifold Catalytic Converter at $205; 53189 679-550 679-551 Manifold Catalytic Converter at $151.
- We compared 10 Exhaust Manifold Converters, from $101.19 to $249.88, median $156.35.
- Best buyer rating in the comparison: ATP Automotive Graywerks 101122 Exhaust Manifold at 4.5/5 from 129 ratings.
Full Comparison Table
| Product | Price | Rating | OE Part Number |
|---|---|---|---|
| M-AUTO Exhaust Manifold Catalytic Converter Jeep Wrangler | $249.88 | 3.5 (17 ratings) | 52059930AH |
| 674-292 52022459AA Manifold Catalytic Converter | $205 | 4.7 (3 ratings) | 674-292, 674-293, 52022458AA, 52022459AA, 68190012AA, 68190013AA, 68190012AB, 68190013AB |
| 53189 679-550 679-551 Manifold Catalytic Converter | $151 | 5.0 (2 ratings) | 53189, 679-550, 679-551, 68249199AA, 68249198AA |
| ATP Automotive Graywerks 101122 Exhaust Manifold | $157.99 | 4.5 (129 ratings) | — |
| Exhaust Manifold Catalytic Converter for Honda Civic | $122.99 | 4.3 (53 ratings) | 18160-PLM-A00, 18160-PLM-A50 |
| AutoShack Exhaust Manifold Catalytic Converter Passenger Side | $238.99 | 4.2 (38 ratings) | 16479 674-843 674-843 |
| AutoShack EM775001 Front Exhaust Manifold Catalytic Converter | $156.35 | 4.9 (14 ratings) | 12604220, 12607896, 674999, 674-999, 16611 |
| AutoShack EMCC774852 Front Exhaust Manifold Catalytic Converter | $101.19 | 3.6 (10 ratings) | 12581992, 18190RCAA00, 18190RCAL00, 18190RGLA00 |
| AutoShack EMCC774813 Exhaust Manifold Catalytic Converter | $105.90 | 4.8 (6 ratings) | 250510H011, 250510H040, 2505128040, 2505128101 |
| AutoShack EMCC773610 Exhaust Manifold Catalytic Converter | $115.87 | 5.0 (1 ratings) | 673608, 673-608, 4230 |
Prices are approximate and move frequently – check the current price before deciding.
Pick 3 offers the strongest price-to-spec ratio because it provides a high-flow stainless steel design for $151.
Our Picks Examined One by One
The 3 picks below run from $151 to $249.88, reviewed in rank order.
M-AUTO Exhaust Manifold Catalytic Converter Jeep Wrangler
The M-AUTO Exhaust Manifold Catalytic Converter is the only option in our comparison that provides a direct fit for the 2007-2009 Jeep Wrangler 3.8L. It was selected because it matches the specific engine requirements for this vehicle model.
What we like: This unit is an OEM style replacement that uses 38.6 pounds of stainless steel. It features computerized mandrel-bends and carries an EPA OBD-II approval for federal emissions models.
Keep in mind: This model is restricted to federal emissions models and is not legal for use in California, New York, Colorado, or Maine. You must verify your vehicle’s emissions standard before ordering.
Will this fit a stock header or do I need to replace the entire manifold? This unit is an OEM style replacement, meaning it is designed to replace the entire manifold assembly rather than bolt onto a stock header. You should confirm your manifold geometry matches the 52059930AH OE part number.
Is the material high-grade stainless steel or just aluminized steel? The M-AUTO unit is constructed from stainless steel, which provides better heat durability than aluminized steel for off-road use.
674-292 52022459AA Manifold Catalytic Converter
We selected the LoftMarte 674-292 52022459AA Manifold Catalytic Converter as a high-performing alternative due to its high 4.7 rating and high-flow design. It serves as a reliable option for Ram ProMaster applications.
What we like: This converter features a high-flow design and includes a 1-year warranty. It is built from stainless steel to withstand high temperatures.
Keep in mind: This product is not for use in California, New York, Colorado, or Maine. It is also specific to the Ram ProMaster 1500 2500 3500 3.6L V6 models.
Will this fit a stock header or do I need to replace the entire manifold? This is a manifold catalytic converter assembly, not a bolt-on for a separate header. You must ensure your engine block casting matches the 52022459AA OE part number.
Is the material high-grade stainless steel or just aluminized steel? The LoftMarte 674-292 uses stainless steel construction for improved rust and heat resistance.
53189 679-550 679-551 Manifold Catalytic Converter
The LoftMarte 53189 679-550 679-551 Manifold Catalytic Converter earned a spot on our list because of its 5.0 rating and high-flow performance for Ram 1500 V6 models.
What we like: This converter is priced at the $151 mark and features a high-flow design. It is constructed from stainless steel and includes a 1-year warranty.
Keep in mind: This unit is excluded from use in California, New York, Colorado, or Maine. It is specifically designed for the 2015-2022 Ram 1500 V6 3.6L.
Will this fit a stock header or do I need to replace the entire manifold? This is a full manifold catalytic converter assembly. You should confirm your vehicle’s requirements align with OE part numbers 53189, 679-550, or 679-551.
Is the material high-grade stainless steel or just aluminized steel? This model uses stainless steel, which is the standard for high-flow durability in these applications.
How to Choose an Exhaust Manifold Converter
Off-road Clearance
Off-road clearance depends on the overall height of the manifold assembly and how it interacts with the engine’s heat shields. You should prioritize an OEM-style replacement like the M-AUTO Exhaust Manifold Catalytic Converter, which is designed to maintain the original vehicle geometry. Because the M-AUTO unit is a direct fit for the 2007-2009 Jeep Wrangler 3.8L, it ensures the converter does not interfere with your suspension travel or ground clearance. Always confirm your specific clearance requirements with a qualified installer to ensure the unit fits within your unique engine bay configuration.
Heat Dissipation
Heat dissipation is managed by the material composition, where stainless steel is the standard for durability. The LoftMarte units utilize a high-flow design to manage thermal loads, while the M-AUTO option provides a standard replacement for federal emissions models. Because high-flow designs can sometimes lead to faster heat cycles, you should verify that the manifold is rated for your specific engine’s thermal output. Note that all three evaluated options are restricted for use in California, New York, Colorado, or Maine due to specific state emissions regulations regarding heat and chemical output.
Bolt Pattern Alignment
Bolt pattern alignment is the most critical factor for installation, as a port mismatch can prevent the manifold from seating against the engine block. We selected these products based on their specific OE Part Number matches, such as the 52059930AH for the Jeep Wrangler or the 674-292 for the Ram ProMaster. To ensure a proper fit, you must verify that your vehicle’s OE part number matches the list provided for each model before ordering. A correct match ensures the manifold geometry aligns with your specific engine block casting.
Flow Rate Capacity
Flow rate capacity determines the balance between exhaust velocity and emissions efficiency. The LoftMarte 53189 and 674-292 models feature high-flow designs, which typically offer better exhaust flow than standard replacements but may carry a premium over basic units. The price difference between these high-flow options and the $249.88 M-AUTO unit depends on your specific vehicle’s requirements; for example, the LoftMarte 53189 is priced at $151. You should weigh flow rate against your need for street legality, as these parts are designed to maintain emissions compliance rather than serving as “off-road only” components.
Research exhaust manifold converter alternatives to achieve similar results if you are looking for different installation options.
What You Need vs What These Picks Deliver
Match the job you actually need done to what it requires, then check whether anything on this page reaches that level. Where nothing does, the row says so.
| What you want to do | What that needs | What clears it here |
|---|---|---|
| Replace the manifold converter on a 2007-2009 Jeep Wrangler 3.8L | OE Part Number 52059930AH | M-AUTO Exhaust Manifold Catalytic Converter |
| Match the manifold geometry for a Ram 1500 V6 3.6L | OE Part Number 53189, 679-550, 679-551 | LoftMarte 53189 |
| Replace the manifold converter on a Ram ProMaster 1500 3.6L V6 | OE Part Number 674-292, 674-293 | LoftMarte 674-292 |
Thresholds are the levels this category is generally held to, not manufacturer claims. Check them against your own workload before buying.
Who Buys Exhaust Manifold Converters, and What It Really Costs
Who buys an Exhaust Manifold Converter, and what each one needs
- Off-road trail riders — EPA Tier 3 compliance to ensure legal street legality after modifications
- Jeep restoration hobbyists — OE Part Number Matching to ensure the manifold geometry aligns with the specific engine block casting
- Overlanding tour operators — High-Flow Ceramic Substrates to achieve a performance benchmark over standard cordierite
- Daily commuters — OEM Cast Iron Manifolds to maintain the baseline for thermal mass and durability
- DIY mechanics — Heat Shield Interference clearance to ensure the unit fits the engine without preventing shield reinstallation
What to budget for on top of the Exhaust Manifold Converter
- Exhaust gaskets — Necessary to create a seal between the manifold and the cylinder head
- Mounting hardware — Required to secure the unit and prevent vibration-induced failure
- Professional installation labor — Needed if the buyer lacks the tools to prevent a Port Mismatch during installation
- Heat shielding — Required to protect surrounding components from the high operating temperatures of the converter
What you can leave out of the budget
- Generic manifold cleaners — Unnecessary if the new unit is installed correctly and prevents Substrate Melting
- Decorative exhaust tips — Purely aesthetic and does not affect the catalytic conversion or flow
Where this kind of product is normally sold
- Aftermarket automotive retailers — Offers specialized bundling and technical advice on fitment
- Online specialty parts stores — Provides competitive pricing but requires careful verification of OE Part Number Matching
- Local automotive repair shops — Provides professional installation and immediate warranty handling for complex fitment issues
What Buyers Still Want to Know
Which manifold catalytic converter should I buy for my Jeep Wrangler?
If you own a 2007-2009 Jeep Wrangler with a 3.8L engine, the M-AUTO Exhaust Manifold Catalytic Converter is the specific fit for your vehicle. It matches OE Part Number 52059930AH and costs around $249.88.
Does the design provide enough clearance for a larger turbo or headers?
The M-AUTO Exhaust Manifold Catalytic Converter uses a computerized mandrel-bend construction to maintain flow geometry. Because the specific clearance dimensions are not listed in the data, you must verify the physical dimensions of your intended headers against the 38.6-pound manifold’s footprint before ordering.
Will these converters trigger a Check Engine light or O2 sensor error?
The M-AUTO Exhaust Manifold Catalytic Converter is EPA OBD-II approved to ensure it remains compatible with your vehicle’s emissions sensors. To avoid error codes, confirm your vehicle is a federal emissions model, as these units are not legal for use in California, New York, Colorado, or Maine.
Which manifold catalytic converter is best for a Ram 1500 V6?
For a 2015-2018 Ram 1500 V6 3.6L, the LoftMarte 53189 679-550 679-551 manifold is a high-performing option. It features a high-flow design and is priced at $151.
Who Should Skip These Exhaust Manifold Converters
The M-AUTO Exhaust Manifold Catalytic Converter is the specific match for the 2007-2009 Jeep Wrangler 3.8L. It uses a stainless steel construction with computerized mandrel-bends to serve as an OEM style replacement. This unit is EPA OBD-II approved but is restricted to federal emissions models and cannot be used in California, New York, Colorado, or Maine.
If you own a Ram ProMaster 1500, 2500, or 3500 with the 3.6L V6 engine, the LoftMarte 674-292 52022459AA Manifold Catalytic Converter is the correct choice. This stainless steel unit features a high flow design and matches OE part numbers 674-292 and 52022459AA. It carries a 1-year warranty but, like the M-AUTO model, is not legal for use in California, New York, Colorado, or Maine.
If you require a catalytic converter that meets the specific emissions standards for California, New York, Colorado, or Maine, none of the options on this page are suitable. These products are restricted to federal emissions models and do not meet the legal requirements for those specific states.