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Eastern50366 ECO II Catalytic Converter - 49-State Legal - no CA shipments, Direct Fit

Part #: EAST50366 | Mfr #: 50366

In Stock
Ships out in 1-2 Business Days
  • APW Bestseller
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5 5 out of 5 stars
(46 customer reviews)

$341.38

List Price: $402.83

Save: $61.45

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  • Series: Eastern ECO II
  • Location: Front
  • Emissions: 49-State Legal - no CA shipments
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Catalyst Substrate Material: Ceramic honeycomb
  • Dimensions: 46 in. overall length
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
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Product reviews

good purchase by kreid, July 7, 2014

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the product that I ordered was delivered on time that was promised and all the items were included.the installation was not complicated due to the parts all lining up in place having the part come together where it did made the installation a breeze I was able to avoid removing any cross members etc.


Perfect fit at a great price by Don M, May 12, 2014

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This rather complicated catalytic converter turned out to be relatively simple to replace especially since it came in two pieces so it was easier to install the new one than it was to remove the old one. The part(s) fit perfectly and everything works great. I removed all 4 O2 sensors and cleaned them before installing them in the new converter; and the whole system is working fine. No more engine codes! The price was better than any other place I looked; and the free shipping was a blessing.


no surprises here item just as described by vetteman1965, March 24, 2014

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bolted on with no problems engine light stayed off after resetting pasted inspection.


Saved money all around for my 2004 Z71 Tahoe by Leo, March 1, 2014

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Great product. Delivered in 3 days. Mechanic took 2 hours. Total cost was $287.10 (Y-pipe) + $139 (labor) = $426.10. Otherwise it would have cost me more than $650 just to replace the 2 cathartics only. Had to remove the TX brace plus the flange that attaches to the muffler pipe had no stud like OEM so we used 2 bolts as recommended by the tech. The tech was fast in answers and support.


Catalytic Exhaust Components by Jimbo, November 11, 2013

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I have not road tested this product yet. This request for a review comes a bit early. Best to wait a week or two and ask for feed back then.


by , October 6, 2013

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part fitted perfectly & it was easy to install. Cleared out the codes been clean scince.


Reliable Catalytic Converter by cm_berrios, July 12, 2013

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Had this professionally installed on my 2002 Checvy Tahoe TL but the installer said he had no issues with fitment or anything. My Check Engine light has stayed off and my truck runs more smoothly. Great purchase!


Great Bargain by cooner, May 20, 2013

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Got this item at a tremendous savings.It arrived very quickly. It is a high quality item. The installer said evertthing fit perfectly. I am really pleased with the whole transaction.


GREAT VALUE by MOTO-MAN, March 3, 2012

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THE PRICE WAS RIGHT, SHIPPED WITH EVERYTHING NEEDED, I HAD A MECHANIC PUT THE CONVERTER ON, HE SAID IT FIT WELL, BUT I HAD A LEAK WHERE THE TWO PIECES CLAMPED TOGETHER SO HE WELDED IT TOGETHER. THEY TURNED MY ENGINE LIGHT OFF AND IT HAS STAYED OFF SO FAR, IT'S BEEN ABOUT A WEEK AND A HALF. GLAD I MADE THE PURCHASE.


Money saver by Tony, January 28, 2012

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Without a lift rack and using ramps and a jack,it was difficult to get the old one off! Its hard working flat on your back! putting the new one on was fairly easy! You need to use a lift rack so you will have room to get the old one out! I saved hundreds doing it myself! Good product!


replaced 1st faulty unit by edwards, November 11, 2011

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The first one was defective, but Eastern exchanged it for a replacement.


Perfect Fit on Sierra by LWS, October 20, 2011

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I was apprehensive about ordering, but after reading some of the reviews I decided to go for it. Glad I did. Save me a ton of money and we removed/installed in about 3 hrs. Oh, yeah, get the PCV valve recommended and replace the gaskets that were sent with the part, especially on the passenger side.


Does not last by couter, September 8, 2011

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cat went in easy but was about half inch short to the exhaust pipe. I put it in just over a year ago and the cat is now rattling on the inside.


Exactly as described! by Runingood, July 19, 2011

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I had one bad Catalitic Converter and after seeing how much it would cost to replace I searched the Internet and foung these direct replacement at a very resonable price. I purched them and my son helped me install them. We cut the old ones out and installed the new ones in less than two hours. We did have to lower the transmisson brace to get them in as previously discussed. Very quick delivery and Fairly easy install. Sounds Great.


awsome purchase ! by Dave, July 6, 2011

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Better warranty, saved more than half in what the dealer wanted for one. The lights OFF and the truck runs great. Kudos to you guy's


by jr, May 31, 2011

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i am pleased with my product it works great i have more power to my truck and my gas mileage is inproved. the delivery was fast the parts where well constructed thanks


Catalytic Converter by Mel, May 17, 2011

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Great product, great way to replace converters without welding.


Works fine, save alot by kinnams, May 16, 2011

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I saved alot and that tops the list. Installed, quiet, seems to work great. Had to drop the transmission support bar which added to the install time. Recycled my old converters and got more than I expected for them.


great buy by Intruder, October 14, 2010

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Shiped in two pieces by ups in 4 days,no trouble to install. I did this me[ one person ]you will need some service ramps,1 floor jack, and two jack stands for back up. my 2001 chevy truck runs like new.some of the reviews state that there is a slight rattle when you start up your truck,i have not had any of this.Saved a little over $800 dollars.


great experience by dpgrizzly, October 6, 2010

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The person that helped me did a great job of making sure I purchased the right item. The item fit great.


by Big Body Chevy, August 31, 2010

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I love it my 04 chevy Burban run's like new i strongly recommend this product,a little rattle when you start but that's it . good for the price & the check engine light turn's off & it took 4 day's to get here. you won't be disappointed


great product by kainniak, July 9, 2010

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had no problem installing this. my truck runs great now and improved mpg by about 5%. was a bit scared because of internet reviews of website, however the part showed up on the day they said it would and it was the correct part. thank you again. i will do buisness with this company again.


even a cave man could install this by big elmo, May 17, 2010

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if you need to replace youre converters I would highly recommend this option.it installs really easy. it took less than three hours two remove the old and install the new.and it was half the price of buying from a muffler shop.


Great price..... by E, May 12, 2010

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Great buy,however, operator failed to inform me of back order for part. But after calling company gave small refund for inconvenience. Once old part removed (which required cutting) install was a breeze. Heat shields rattle quite a bit, but performance is back.


Good product, reasonable price. by Rippin, April 16, 2010

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Shipping took a little longer than expected, but customer service remained diligent and followed through tracking delivery. Product is well thought out. Installation is much easier than removing the original part. It is however a true direct fit item. Hardware includes clamp for crossover and new gaskets, although the new donut gasket is not the quality of the original. (Hence 4-star rating.) The product does ship in two pieces, which works out to benefit the installer. Removal of the original part is not for the faint of heart. For the do-it-yourself folks, be prepared to provide plenty of ground clearance, remove the transmission cross-member, and the support braces from the frame to the center section.


Very Satisfied Customer by Deathray, April 6, 2010

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Overall, a good product at a great price. My check engine light stays off and my truck's performance has returned. Strongly recommend using this product if your in need of new CATs. Note: the CATs must have shipped the day of order. I recieved this within 4 days of ordering.


cost saving solution by "DOC" in ohio, November 28, 2009

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well the hardest part was removing the old converter pipes ,after that everything went together real easy. no need to bend or alter the pipe. one big con is that the left hand gasket seat is .125 deep , the gasket that was provided was too small and was around .100 thick no way of seating off to the manifold I had take .020 of the pipe surface and I bought a FELPRO gasket set which was more than enough to provide sufficient seal


convenient & economical by , November 27, 2009

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Came in two sections, fitting with u clamp. Included gaskets to header pipes. Looked nice, felt substantial. Couldn't install by myself unfortunately, had to go to mechanic. SES light went off and trouble code for cat stayed off. Shortly SES light came on again with 3 codes for an O2 sensor. I replaced it and SES is now off with no trouble codes and vehicle passed inspection. Test or consider replacing O2 sensors as well, I had to.


by blue duster, November 26, 2009

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I had my mechcanic install the coverters. He said they went right in, the fit was excellent. As far as I can tell, my p/u runs great after I had them installed. I would recommend both this product, and this company to buy from.


great product by SilveradoSloth71, October 23, 2009

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it is a great product, it comes in 2 peices and is really easy to install. took me an a friend about an hour to install. it also gave me my performance back, truck picks up faster and has better gas mileage


Good Replacement by BA, September 18, 2009

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GM won'ts 1300.00 for the replacement part. This part fit very well and looked all most as good. So far the service engine light has stayed off


Great Part! by Ron, September 16, 2009

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Great part, great price, great service. Saved me about $500. Shipped very fast. I dreaded the stated 7-10 day ship time...but ordered it on a Thursday, got it the following Monday. No issue with the warning light and the Tahoe runs great again.


exactly as advertised by , September 1, 2009

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Converter was delivered quickly and was an exact fit for my pick-up. Local quote to replace was "about a thousand," so the $332 or so was certainly a lot better than that.


by , August 24, 2009

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Product arrived in a few days and in good shape. Installed with out any problems. Priced below local outlets.


good purchase by hansi, August 16, 2009

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Good item for the money.Bolts right up .Not the same quality material as OEM but will suffice.


excellent by jimmy, July 30, 2009

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The service was fast, prices were great, the mail service was excellent, I would recommend this web site to everyone


Great price by Scotty, July 26, 2009

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Excellent quality, fast shipping, contained everything needed to install. Performs as good as original equipment.


great price easy installed worked great by , June 4, 2009

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Good quality welds all parts included arrived very fast and installed in less than an hour.


Great product, super fast shipping by Firetom182, April 30, 2009

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Couldn't imagine it would fit without hassle, nut it did. Shipped in 2 pieces, but came with all clamps and gaskets.. Took 2 hours of work to put in, but saved 600.00 off mechanics estimate. Thanks


Not an OE replacement by HeavyChevy, April 7, 2009

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The appearance is very much like the original equipment, except for the split crossover. Installation was fairly simple with removal of transmission crossmember. Do not like the muffler clamp on the crossover; would recommend welding into place. The initial sound quality was not expected, and experienced a lot of reverberation noise up by the converters. Oxygen sensor ports seemed well layed out and appearance was good, but when I had to change the right rear (bank 2) oxygen sensor after the installation it was buried up into the floor board. Difficult to get out and get a new one in. Not exactly OE replacement.


Replacement Catalytic Converter by Avalanche, February 21, 2009

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Took a little bit of "physical persuading" to get the new pipe into position. The lower front sway arm was slightly in the way when inserting the new pipe into position. But once you got past it, the catalytic converter pipe fit perfectly. Came with all necessary gaskets needed for installation. Best price and fast delievery.


converter by South, February 3, 2009

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man let me tell the customer service was great, my part came before i even got my tracking number, now that oustanding, (maybe b/c the warehouse was located in PA and i stay in MD) but that was great help to me, luv these guys, somebody get a round of beer on me.


Great part by Shop guy, January 14, 2009

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Part fits perfectly, nice construction and keeps the check engine light off! The part shipping in two pieces makes the installation that much easier. I have purchased dozens of Eastern converters from this site and you can not go wrong.


Great Deal!!!!! by , December 18, 2008

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Overall a great deal. You won't find a better deal anywhere, believe me, I looked. :)


Good purchase by btscott1, December 2, 2008

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Overall I would buy this again if the need came up. Good fit and easy to install. The tube bends did not look particularly good but it worked without issue so appearance isn't everything.


Inexpensive, solves the problem! by pierre, June 13, 2008

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A beautifully constructed piece. I was going to install myself, and thought better of it. $100 for an exhaust shop to install, they said I would have had great difficulty as it was not all that easy. If you are a novice, maybe better let the pros handle it. Went into a flex-fuel 2002 suburban, with less than 100k miles. Expect the CAT to clog early on your flex-fuel chevy.