$188.00
FREE Returns
FREE delivery Saturday, May 11
Or fastest delivery Friday, May 10. Order within 6 hrs 24 mins
Only 7 left in stock (more on the way).
$$188.00 () Includes selected options. Includes initial monthly payment and selected options. Details
Price
Subtotal
$$188.00
Subtotal
Initial payment breakdown
Shipping cost, delivery date, and order total (including tax) shown at checkout.
Ships from
Amazon.com
Ships from
Amazon.com
Sold by
Amazon.com
Sold by
Amazon.com
Returns
Eligible for Return, Refund or Replacement within 30 days of receipt
Eligible for Return, Refund or Replacement within 30 days of receipt
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt.
Read full return policy
Returns
Eligible for Return, Refund or Replacement within 30 days of receipt
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt.
Read full return policy
Packaging
Ships in product packaging
black leaf Ships in product packaging

This item has been tested to certify it can ship safely in its original box or bag to avoid unnecessary packaging. Since 2015, we have reduced the weight of outbound packaging per shipment by 41% on average, that’s over 2 million tons of packaging material.

If you still require Amazon packaging for this item, choose "Ship in Amazon packaging" at checkout. Learn more
Packaging
black leaf Ships in product packaging

This item has been tested to certify it can ship safely in its original box or bag to avoid unnecessary packaging. Since 2015, we have reduced the weight of outbound packaging per shipment by 41% on average, that’s over 2 million tons of packaging material.

If you still require Amazon packaging for this item, choose "Ship in Amazon packaging" at checkout. Learn more
Payment
Secure transaction
Your transaction is secure
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more
Payment
Secure transaction
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more

MagnaFlow Exhaust Products MagnaFlow Universal Catalytic Converter HM Grade Federal/EPA Compliant 99306HM

4.1 4.1 out of 5 stars 96 ratings
$188.00
FREE Returns
S8 2001
{"desktop_buybox_group_1":[{"displayPrice":"$188.00","priceAmount":188.00,"currencySymbol":"$","integerValue":"188","decimalSeparator":".","fractionalValue":"00","symbolPosition":"left","hasSpace":false,"showFractionalPartIfEmpty":true,"offerListingId":"nWZ7GBBb4POikKU9nrcgsa8LlNlHX29EsJNSl2z1FMB28d5X5Bd40HcqP%2FMDKJ1yNcfzgsLw0VySnhczbWHPLXf%2BqPdyOrtSPdjL4AMoQciYlkfT5uvJSFoS0%2B1WTrAx%2BPOSX1MD69c%3D","locale":"en-US","buyingOptionType":"NEW","aapiBuyingOptionIndex":0}]}

Purchase options and add-ons

  • Meets or exceeds CARB emissions requirements
  • Engineered to keep the Check Engine light off
  • CNC precision robotic manufacturing
  • Universal design allows the part to fit a wide array of vehicles (cutting and welding required)
  • Stainless steel construction of this spun body catalytic converter is highly resistant to corrosion
› See more product details

Buy it with

MagnaFlow Exhaust Products MagnaFlow Universal Catalytic Converter HM Grade Federal/EPA Compliant 99306HM
$188.00
Get it as soon as Saturday, May 11
Only 7 left in stock (more on the way).
Ships from and sold by Amazon.com.
+
OYEAUTO 2Pcs O2 Oxygen Sensor 15717 15716 Upstream & Downstream Compatible with Ford 1997-2008 F150 Explorer Ranger Truck Maz
$32.99
Get it as soon as Saturday, May 11
In Stock
Sold by OYEAUTO and ships from Amazon Fulfillment.
+
2PCS Car Exhaust Gasket, Ultra Seal 2-Bolt 2.5-Inch Exhaust Flange Gasket Standard Exhaust Gasket, Reinforced High Temperatur
$5.99
Get it as soon as Saturday, May 11
In Stock
Sold by JOYCOURT and ships from Amazon Fulfillment.
Total price:
To see our price, add these items to your cart.
Details
Added to Cart
Some of these items ship sooner than the others.
Show details Hide details
Choose items to buy together.

Important information

Legal Disclaimer

CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Product Description

catalytic converter exhaust system cleaner flowmaster muffler high flow long tube headers small

small block chevy heads automotive exhaust systems parts silverado flowmaster california legal

premium construction stainless steel durability powder coating system heat shield anti theft

federal epa emissions long tube headers exhaust manifold automotive replacement emission product

magnaflow exhaust products catalytic converter california cat clamp manifold muffler direct fit

Keep the Light Off

Engineered to keep the Check Engine light off

Premium Construction

Stainless Steel construction for maximum durability and finish

Federal EPA Compliant

Meets or exceeds Federal EPA emissions requirements

HM Grade

Formulated for vehicles with Federal emissions systems in Federal markets

catalytic converter shield speed engineering headers chevy vortec heads high flow cat sbc headers

MagnaFlow HM Grade Federal / EPA Compliant Universal Catalytic Converter

MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99306HM helps keep the check engine light off. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design (cutting and welding is required). With highly corrosion resistant, stainless steel construction, you can have confidence in the quality of this catalytic converter.

This part is designed to meet Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with Federal/EPA Emission systems.

Specifications | MagnaFlow Part # 99306HM

Air Tube Adaptable No
Body Height 4.375"
Body Length 11"
Body Shape Round
Body Type Clam Shell
Body Width 4.25"
Heat Shield Included Yes
Heat Shield Material Aluminized Steel
Inlet Attachment Weld-On
Inlet Diameter 2.5"
Inlet Orientation Straight
Outlet Attachment Weld-On
Outlet Diameter 2.5"
Outlet Orientation Straight
Overall Length 15"
Oxygen Sensor Location Post Converter

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Feedback

MagnaFlow

MagnaFlow Exhaust Products MagnaFlow Universal Catalytic Converter HM Grade Federal/EPA Compliant 99306HM

Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.

Where did you see a lower price?
/
/
/
/
Please sign in to provide feedback.

What's in the box

  • MagnaFlow 99306HM HM Grade Universal Catalytic Converter, 2.5" Inlet/Outlet (EPA Compliant)

    • Compare with similar items

    This Item
    MagnaFlow Exhaust Products MagnaFlow Universal Catalytic Converter HM Grade Federal/EPA Compliant 99306HM
    MagnaFlow Exhaust Products MagnaFlow Universal Catalytic Converter HM Grade Federal/EPA Compliant 99306HM
    Recommendations
    MagnaFlow Catalytic Converter 334006: 2.5"/2.5" Inlet/Outlet, California Grade, Universal Fit (CARB Compliant)
    MagnaFlow Catalytic Converter 334006: 2.5"/2.5" Inlet/Outlet, California Grade, Universal Fit (CARB Compliant)
    dummy
    MagnaFlow 334104 California Grade Universal Catalytic Converter, 2" Inlet/Outlet (CARB Compliant)
    MagnaFlow 334104 California Grade Universal Catalytic Converter, 2" Inlet/Outlet (CARB Compliant)
    dummy
    MagnaFlow Exhaust Products MagnaFlow Universal Catalytic Converter 99235HM - HM Grade, EPA Compliant
    MagnaFlow Exhaust Products MagnaFlow Universal Catalytic Converter 99235HM - HM Grade, EPA Compliant
    dummy
    MagnaFlow Catalytic Converter 357204: 2"/2" Inlet/Outlet, California Grade, Universal Fit (CARB Compliant)
    MagnaFlow Catalytic Converter 357204: 2"/2" Inlet/Outlet, California Grade, Universal Fit (CARB Compliant)
    dummy
    MagnaFlow Catalytic Converter 447104: 2"/2" Inlet/Outlet, California Grade, Universal Fit (CARB Compliant)
    MagnaFlow Catalytic Converter 447104: 2"/2" Inlet/Outlet, California Grade, Universal Fit (CARB Compliant)
    Details
    Added to Cart
    Details
    Added to Cart
    Details
    Added to Cart
    Details
    Added to Cart
    Details
    Added to Cart
    Details
    Added to Cart
    Price$188.00$202.00-5% $183.18
    List: $192.86    		$182.00$191.00-5% $523.00
    List: $552.89
    Delivery
    Get it as soon as Saturday, May 11
    Get it May 9 - 10
    Get it May 9 - 13
    Get it May 8 - 13
    Get it May 9 - 10
    Get it as soon as Tuesday, May 14
    Customer Ratings
    4.14.1 out of 5 stars96
    4.74.7 out of 5 stars8
    3.83.8 out of 5 stars11
    3.73.7 out of 5 stars31
    5.05.0 out of 5 stars4
    3.93.9 out of 5 stars3
    Sold By
    Amazon.com
    Street Series
    EZ Automotive
    T Squared Industries
    Street Series
    Amazon.com

    Looking for specific info?

    Customer reviews

    4.1 out of 5 stars
    4.1 out of 5
    96 global ratings

    Customers say

    Customers like the quality, fit, performance, sound quality and value of the catalytic converter. For example, they mention it's a good product, works flawlessly, has a subtle sound and is worth the money.

    AI-generated from the text of customer reviews

    14 customers mention11 positive3 negative

    Customers like the quality of the auto part. They say it's a good product with a quality finish. Some customers also mention that it fits well and has a great flow and sound for a catalytic converter.

    "...It looks like good quality and got rid of the p0420 code...." Read more

    "This cat is awesome. Really worth the money...." Read more

    "good cat, good price, simple order and timely shipping" Read more

    "...It's clogged code is being triggered(cat is failing) terrible gas mileage and low power performance...." Read more

    6 customers mention6 positive0 negative

    Customers are satisfied with the fit of the auto part. They mention that it fits well and is easy to install.

    "...It works and fits nicely. Installation was easy for a muffler shop." Read more

    "Fits as expected. It was a an easy weld and go. Cleared the sel and the mpg have increased. Completely recommend this item." Read more

    "Fits without issue on 02 Lesabre. The pipe had to be rounded out just a little to fit the OEM connection." Read more

    "Great fit. Welded it in. With minimal problems. Had to spread open one end a bit." Read more

    6 customers mention6 positive0 negative

    Customers are satisfied with the performance of the catalytic converter. They mention that it works flawlessly, makes a big difference in throttle response and acceleration, and that it clears the screen. Some say that the mpg have increased.

    "...Anyway, the car drives so nice now! Just like the old days. Two thumbs up, Magnaflow!I drive a 2000 Buick LeSabre Custom...." Read more

    "...It was a an easy weld and go. Cleared the sel and the mpg have increased. Completely recommend this item." Read more

    "Installed and working, down side is that I could get it new for the same price in a different web site." Read more

    "Just installed on my 2006 Impala SS. I must say big difference in throttle response and acceleration. The old Cat was clogged causing hesitation...." Read more

    5 customers mention5 positive0 negative

    Customers are satisfied with the sound quality of the auto part. They mention that it has a subtle sound, a great flow, and a nice little rumble.

    "...to replace a plugged cat and it really opened it up gives is a nice little rumble! Easily 5 out of 5." Read more

    "...Not a huge deal, but it welded on nice. It sounds really nice, and gives my exhaust a little extra rumble. I bought it to fix the dreaded p0420 code...." Read more

    "...This magnaflow instantly solved the problem plus it added some tone to the exhaust. Very happy with this purchase" Read more

    "It was awesome and had a great flow and sound for a catalytic converter on my Chevy s10" Read more

    4 customers mention4 positive0 negative

    Customers appreciate the value of the auto part. They say it has great fit and sound at an excellent price.

    "This cat is awesome. Really worth the money...." Read more

    "good cat, good price, simple order and timely shipping" Read more

    "Great fit and sound at a excellent price" Read more

    "Great Price and clears the P0420 code..." Read more

    So far, so good! Don't delay!
    5 Stars
    So far, so good! Don't delay!
    Got rid of engine hesitation, and not to mention the fumes. Solved the P0420 code too. Have a look at the old cat that I sliced off of my car. Completely hollow! I have no idea where the catalysts from that one went because the resonator and muffler were clear too... I also attached a photo of the new Magnaflow cat before it got welded. I tried clamps but it wanted to leak so push came to shove. Anyway, the car drives so nice now! Just like the old days. Two thumbs up, Magnaflow!I drive a 2000 Buick LeSabre Custom. I'll update if anything changes.
    Hide
    Thank you for your feedback
    Sorry, there was an error
    Sorry we couldn't load the review

    Top reviews from the United States

    Rob & Michele
    5.0 out of 5 stars Great Price and clears the P0420 code
    Reviewed in the United States on November 12, 2016
    Size: S8 2001Verified Purchase
    I put this on a 03 Pont Bonne with 193k. I had a p0420 code for about 1 yr but the car ran fine. I needed to pass inspection, so tried this, had it installed for 80 and passed inspection. It looks like good quality and got rid of the p0420 code. Much better than another car where I used a Eastern Cat, oem replacement, and the code came back. I recommend this magnaflow cat, especially for a 3.8l GM. It works and fits nicely. Installation was easy for a muffler shop.
    4 people found this helpful
    Helpful
     Report
    Chuck Van Ross
    5.0 out of 5 stars Love it.
    Reviewed in the United States on July 23, 2014
    Size: S8 2001Verified Purchase
    This cat is awesome. Really worth the money. Put it on my 02 Camaro to replace a plugged cat and it really opened it up gives is a nice little rumble! Easily 5 out of 5.
    2 people found this helpful
    Helpful
     Report
    Kris
    4.0 out of 5 stars Four Stars
    Reviewed in the United States on July 5, 2014
    Size: S8 2001Verified Purchase
    good cat, good price, simple order and timely shipping
    2 people found this helpful
    Helpful
     Report
    Alesha
    5.0 out of 5 stars Works flawlessly
    Reviewed in the United States on November 25, 2016
    Size: S8 2001Verified Purchase
    Is not a direct fit for an 02 Grand Prix. I had to expand the inlet, and buy a 4" adapter for the outlet to make it long enough. Not a huge deal, but it welded on nice. It sounds really nice, and gives my exhaust a little extra rumble. I bought it to fix the dreaded p0420 code. I verified the old cat was bad by testing it with an infrared themoter, and verified it was indeed a bad cat. The product itself I give 5 stars.
    Customer image
    Alesha
    5.0 out of 5 stars Works flawlessly
    Reviewed in the United States on November 25, 2016
    Is not a direct fit for an 02 Grand Prix. I had to expand the inlet, and buy a 4" adapter for the outlet to make it long enough. Not a huge deal, but it welded on nice. It sounds really nice, and gives my exhaust a little extra rumble. I bought it to fix the dreaded p0420 code. I verified the old cat was bad by testing it with an infrared themoter, and verified it was indeed a bad cat. The product itself I give 5 stars.
    Images in this review
    Customer image
    Customer image
    5 people found this helpful
    Helpful
     Report
    Mb
    3.0 out of 5 stars Issues after just 3 months of use 😳 constant codes related to converters after 3 months.
    Reviewed in the United States on November 16, 2019
    Size: S8 2001Verified Purchase
    Seemed great at first. Purchased Aug 21st 2019. Installed Sept 1st 2019. Its now Nov 16th and ive had the CEL come on many many times relating to catalytic converter problems. The car coughs when it shuts off. Professionally installed too.
    Helpful
     Report
    Guillaume Malaquin
    5.0 out of 5 stars Work like it should
    Reviewed in the United States on June 13, 2022
    Size: S8 2001Verified Purchase
    Bought 4 years ago and sold the car 2 years ago, the new owner of the car didn't complain about it since.

    But 170$ now? Seriously? It was 67 in 2018...
    One person found this helpful
    Helpful
     Report
    Brian Zimmerman
    5.0 out of 5 stars So far, so good! Don't delay!
    Reviewed in the United States on October 1, 2016
    Size: S8 2001Verified Purchase
    Got rid of engine hesitation, and not to mention the fumes. Solved the P0420 code too. Have a look at the old cat that I sliced off of my car. Completely hollow! I have no idea where the catalysts from that one went because the resonator and muffler were clear too... I also attached a photo of the new Magnaflow cat before it got welded. I tried clamps but it wanted to leak so push came to shove. Anyway, the car drives so nice now! Just like the old days. Two thumbs up, Magnaflow!
    I drive a 2000 Buick LeSabre Custom. I'll update if anything changes.
    Customer image
    Brian Zimmerman
    5.0 out of 5 stars So far, so good! Don't delay!
    Reviewed in the United States on October 1, 2016
    Got rid of engine hesitation, and not to mention the fumes. Solved the P0420 code too. Have a look at the old cat that I sliced off of my car. Completely hollow! I have no idea where the catalysts from that one went because the resonator and muffler were clear too... I also attached a photo of the new Magnaflow cat before it got welded. I tried clamps but it wanted to leak so push came to shove. Anyway, the car drives so nice now! Just like the old days. Two thumbs up, Magnaflow!
    I drive a 2000 Buick LeSabre Custom. I'll update if anything changes.
    Images in this review
    Customer image Customer image
    Customer imageCustomer image
    13 people found this helpful
    Helpful
     Report
    Supercharged
    5.0 out of 5 stars It was a an easy weld and go
    Reviewed in the United States on August 19, 2016
    Size: S8 2001Verified Purchase
    Fits as expected. It was a an easy weld and go. Cleared the sel and the mpg have increased. Completely recommend this item.
    One person found this helpful
    Helpful
     Report

    Top reviews from other countries

    Translate all reviews to English
    José Dante
    1.0 out of 5 stars No me sirvió
    Reviewed in Mexico on October 27, 2018
    Size: S8 2001Verified Purchase
    Se desbarató, no me sirvió para mi cheroke 5.7 L
    Report
    LMF
    5.0 out of 5 stars Awesome purchase for the price
    Reviewed in Canada on April 17, 2018
    Size: S8 2001Verified Purchase
    Awesome purchase for the price. My check engine light finally went off after replacing my catalytic converter with this one. Fit perfect and even got $85.00 for recycling my old catalytic converter. This was for my 2003 Grand Prix Limited Edition GTP. Very happy! My mechanic was able to install this for me and it just needed some welding on.
    Report
    Don R.
    5.0 out of 5 stars Good value, rugged metal housing, works as hoped.
    Reviewed in Canada on September 14, 2019
    Size: S8 2001Verified Purchase
    Had this converter installed at a local muffler shop ...only took about a half hour. Car is right back to previous except the Check engine light is out and stayed out after I cleared the codes. I'm happy
    One person found this helpful
     Report
    Mr Pink
    5.0 out of 5 stars Was drunk
    Reviewed in Canada on January 20, 2019
    Size: S8 2001Verified Purchase
    I musta been drunk when I bought dis.
    Report