Does the MagnaFlow 51775 bolt on directly?

No. It is a universal-fit converter, so the exhaust pipe must be cut and it usually needs welding.

Will it pass an emissions test?

It carries an EO number (D-193-137) for legal use in covered applications. Check that your vehicle is listed before buying.

Does it have an O2 sensor port?

No. There is no O2 sensor port, so a vehicle that needs one requires a bung welded in.

What pipe size does it fit?

Both the inlet and outlet are 2.25 inches, and the body is 8.75 inches long.

Does it come with an air tube?

No. It has no air tube, so it does not suit vehicles that use one.

Where is the MagnaFlow 51775 Catalytic Converter cheapest?

At ExtremeTerrain.com, for $342.00, as of our latest check.

Where can I buy the MagnaFlow 51775 Catalytic Converter?

12 stores we checked sell it, including ExtremeTerrain.com, Amazon, AutoTalent, AutoZone, MagnaFlow Converters.

MagnaFlow 51775 Catalytic Converter

Best price now

$342.00at ExtremeTerrain.comChecked 15 h ago

Prices are checked against each store and labelled with when.

Visit ExtremeTerrain.com

MagnaFlow 51775 Catalytic Converter

Best price now

$342.00at ExtremeTerrain.comChecked 15 h ago

Prices are checked against each store and labelled with when.

Visit ExtremeTerrain.com

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Price facts

Last seen at $342.00 at ExtremeTerrain.com on Nov 13.

Our take on the MagnaFlow 51775 Catalytic Converter

The MagnaFlow 51775 is a universal-fit, round catalytic converter with 2.25-inch inlet and outlet, an 8.75-inch body and no air tube or O2 sensor port. It is built from heavy-duty stainless steel with seam welds placed close to the body and a heat shield, which MagnaFlow says keeps the catalyst in place and adds rigidity. It suits drivers replacing a failed converter who can cut and weld exhaust pipe, not bolt-on installers. Against direct-fit rivals it needs fabrication, but its stainless body and weld construction are its selling points over cheaper aluminized universal units.

Best forDrivers with welding or exhaust-shop accessOlder vehicles needing a universal replacement converterBudget-minded repairs where a direct-fit unit is not madeSmog-check replacements on 2.25-inch exhaust systems

Pros

Heavy-duty stainless steel body resists corrosion
Seam welds close to the body hold the catalyst in place
Heat shield adds rigidity and protects nearby parts
2.25-inch inlet and outlet fit many stock exhaust pipes
Universal design covers vehicles without a direct-fit option

Cons

Requires cutting and likely welding to install
No O2 sensor port, so some vehicles need extra work
No air tube, which rules out applications that use one
Round body may not match the space of every stock converter

MagnaFlow 51775 Catalytic Converter prices at every store

ExtremeTerrain.comNew
In stock
$342.00Free shippingChecked 15 h ago
Visit ExtremeTerrain.com

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MagnaFlow 51775 Catalytic Converter price history

Lowest price we've seen: $301.64 on Nov 14 at Amazon. Tracked across 12 stores since Nov 14.

What reviewers say

Owners of universal MagnaFlow converters generally report solid build quality and passing emissions after a proper weld-in. The main complaints center on installation effort and fitment on vehicles that expect a direct-fit unit.

What people mention

Build qualityPraisedOwners describe the stainless body and welds as solid and long-lasting.
InstallationCriticisedBuyers say it takes cutting and welding, which is more work than a direct-fit unit.
EmissionsPraisedReviewers report passing smog checks after installation.
FitmentMixedFit varies by vehicle, and some buyers had to modify the exhaust to make it work.
Sensor portCriticisedThe lack of an O2 sensor port means extra work on vehicles that need one.

About the MagnaFlow 51775 Catalytic Converter

The MagnaFlow 51775 is an OEM grade universal fit catalytic converter with a round body. It is meant for the rear passenger side position. It has no air tube and no O2 sensor port.

The converter body is made from heavy-duty stainless steel. It is seam welded close to the converter body, not along the edge, which keeps the converter from expanding and the catalyst from moving around. A heat shield adds protection from heat and structural rigidity.

Because it is a universal fit, installation requires some fabrication. This involves cutting the exhaust pipe and may require welding.

Part number: 51775
Grade: OEM grade
Configuration: Universal fit
Position: Rear passenger side
Body shape: Round
Inlet diameter: 2.25 in
Outlet diameter: 2.25 in
Overall length: 8.75 in
Body material: Heavy-duty stainless steel
Heat shield: Aluminized steel or stainless steel
Air tube: None
O2 sensor port: None
EO number: D-193-137
Installation: Requires cutting the exhaust pipe; may require welding

Specifications

color: OtherSource
size: 14.250Source

Questions and answers

Does the MagnaFlow 51775 bolt on directly?: No. It is a universal-fit converter, so the exhaust pipe must be cut and it usually needs welding.
Will it pass an emissions test?: It carries an EO number (D-193-137) for legal use in covered applications. Check that your vehicle is listed before buying.
Does it have an O2 sensor port?: No. There is no O2 sensor port, so a vehicle that needs one requires a bung welded in.
What pipe size does it fit?: Both the inlet and outlet are 2.25 inches, and the body is 8.75 inches long.
Does it come with an air tube?: No. It has no air tube, so it does not suit vehicles that use one.
Where is the MagnaFlow 51775 Catalytic Converter cheapest?: At ExtremeTerrain.com, for $342.00, as of our latest check.
Where can I buy the MagnaFlow 51775 Catalytic Converter?: 12 stores we checked sell it, including ExtremeTerrain.com, Amazon, AutoTalent, AutoZone, MagnaFlow Converters.