MO Wanted: NOS muffler 3996417 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Joesjunk** · 07-02-2021, 07:21 PM

Looking for an nos muffler part number 3996417

john deere · 07-04-2021, 12:49 AM

Hi Joe

I saw an nos muffler on ebay, not exact number, but close.

**Joesjunk** · 07-04-2021, 11:15 AM

Quote:

Originally Posted by john deere

Hi Joe

I saw an nos muffler on ebay, not exact number, but close.

Thank you, I looked at all of them on eBay. I’m really shooting for the exact one I need. But that could prove to be impossible.

**Dave** · 07-04-2021, 09:07 PM

Hi Joe,
Was 417 the round or oval shaped muffler
I think I have the round one.

**Joesjunk** · 07-05-2021, 09:58 AM

Quote:

Originally Posted by Dave

Hi Joe,
Was 417 the round or oval shaped muffler
I think I have the round one.

It’s oval shaped.

**daddymoo2** · 07-05-2021, 11:34 AM

I have 2 mufflers. The number is stamped in ink on the muffler and the number is 3983318 best I can tell. The number on the box unreadable. Muffler is oval and is 21 1/4 long. One end pipe is 2 1/2” and other end is 2”. If this helps let me know. Thanks Don

**daddymoo2** · 07-05-2021, 03:11 PM

Here are pics of the muffler. Thanks Don

**daddymoo2** · 07-05-2021, 03:13 PM

More pics. Thanks

**Joesjunk** · 07-05-2021, 06:48 PM

Thanks, I’ll measure mine and see how it looks.

**Joesjunk** · 07-06-2021, 04:54 PM

Don, what do you want for those mufflers? I may be able to use them on a dual exhaust truck I have.
Thanks.

**Joesjunk** · 07-06-2021, 04:57 PM

The muffler I need to fit my original application needs to have these slots on the inlet to be horizontal and not vertical.

**Joesjunk** · 08-13-2021, 10:30 AM

Still looking

07-02-2021, 07:21 PM	#1
Joesjunk Senior Member Join Date: May 2001 Location: Independence MO. Posts: 7,715	Wanted: NOS muffler 3996417 Looking for an nos muffler part number 3996417 __________________ 72 3/4t Custom Deluxe 402/auto 66k Original paint 71 3/4t 4x4 Custom Deluxe 10k original miles Original paint 71 3/4t Cheyenne 402 70k original paint 72 3/4t 4x4 Custom deluxe 72 3/4t 4x4 Custom deluxe 91k original paint 72 Cheyenne/30 Dually 69 Camaro SS396 4-speed 13 GMC 2500HD Duramax I bought new 05 Jeep Wrangler "Willys Edition" 12k miles (I bought new) 85 3/4 ton 4x4 Scottsdale 33k miles original paint 86 1 ton 4x4 SRW Silverado 454 restored 80 1 ton 4x4 SRW Silverado 9,434 original miles!! original paint 95 GMC 1 ton dually 4x4 my dad bought new 95 GMC 3/4 ton 4x4, regular cab 454, 31k original miles 2002 2500HD 4x4 regular cab 6.0L 67k miles 2002 2500HD 4x4 regular cab 8.1L 28k miles 2003 GMC 2500HD 4x4 regular cab Diesel 93k miles 67-72 Parts for sale

07-04-2021, 12:49 AM	#2
john deere Registered User Join Date: Feb 2018 Location: Ft Collins CO Posts: 66	Re: Wanted: NOS muffler 3996417 Hi Joe I saw an nos muffler on ebay, not exact number, but close.

07-04-2021, 09:07 PM	#4
Dave DND Trucks Join Date: Dec 1999 Location: NW Indiana Posts: 2,404	Re: Wanted: NOS muffler 3996417 Hi Joe, Was 417 the round or oval shaped muffler I think I have the round one.

07-05-2021, 11:34 AM	#6
daddymoo2 Senior Member Join Date: Mar 2010 Location: union,ky Posts: 1,588	Re: Wanted: NOS muffler 3996417 I have 2 mufflers. The number is stamped in ink on the muffler and the number is 3983318 best I can tell. The number on the box unreadable. Muffler is oval and is 21 1/4 long. One end pipe is 2 1/2” and other end is 2”. If this helps let me know. Thanks Don

07-05-2021, 03:11 PM	#7
daddymoo2 Senior Member Join Date: Mar 2010 Location: union,ky Posts: 1,588	Re: Wanted: NOS muffler 3996417 Here are pics of the muffler. Thanks Don Attached Images

07-05-2021, 03:13 PM	#8
daddymoo2 Senior Member Join Date: Mar 2010 Location: union,ky Posts: 1,588	Re: Wanted: NOS muffler 3996417 More pics. Thanks Attached Images

07-05-2021, 06:48 PM	#9
Joesjunk Senior Member Join Date: May 2001 Location: Independence MO. Posts: 7,715	Re: Wanted: NOS muffler 3996417 Thanks, I’ll measure mine and see how it looks. __________________ 72 3/4t Custom Deluxe 402/auto 66k Original paint 71 3/4t 4x4 Custom Deluxe 10k original miles Original paint 71 3/4t Cheyenne 402 70k original paint 72 3/4t 4x4 Custom deluxe 72 3/4t 4x4 Custom deluxe 91k original paint 72 Cheyenne/30 Dually 69 Camaro SS396 4-speed 13 GMC 2500HD Duramax I bought new 05 Jeep Wrangler "Willys Edition" 12k miles (I bought new) 85 3/4 ton 4x4 Scottsdale 33k miles original paint 86 1 ton 4x4 SRW Silverado 454 restored 80 1 ton 4x4 SRW Silverado 9,434 original miles!! original paint 95 GMC 1 ton dually 4x4 my dad bought new 95 GMC 3/4 ton 4x4, regular cab 454, 31k original miles 2002 2500HD 4x4 regular cab 6.0L 67k miles 2002 2500HD 4x4 regular cab 8.1L 28k miles 2003 GMC 2500HD 4x4 regular cab Diesel 93k miles 67-72 Parts for sale

07-06-2021, 04:54 PM	#10
Joesjunk Senior Member Join Date: May 2001 Location: Independence MO. Posts: 7,715	Re: Wanted: NOS muffler 3996417 Don, what do you want for those mufflers? I may be able to use them on a dual exhaust truck I have. Thanks. __________________ 72 3/4t Custom Deluxe 402/auto 66k Original paint 71 3/4t 4x4 Custom Deluxe 10k original miles Original paint 71 3/4t Cheyenne 402 70k original paint 72 3/4t 4x4 Custom deluxe 72 3/4t 4x4 Custom deluxe 91k original paint 72 Cheyenne/30 Dually 69 Camaro SS396 4-speed 13 GMC 2500HD Duramax I bought new 05 Jeep Wrangler "Willys Edition" 12k miles (I bought new) 85 3/4 ton 4x4 Scottsdale 33k miles original paint 86 1 ton 4x4 SRW Silverado 454 restored 80 1 ton 4x4 SRW Silverado 9,434 original miles!! original paint 95 GMC 1 ton dually 4x4 my dad bought new 95 GMC 3/4 ton 4x4, regular cab 454, 31k original miles 2002 2500HD 4x4 regular cab 6.0L 67k miles 2002 2500HD 4x4 regular cab 8.1L 28k miles 2003 GMC 2500HD 4x4 regular cab Diesel 93k miles 67-72 Parts for sale

07-06-2021, 04:57 PM	#11
Joesjunk Senior Member Join Date: May 2001 Location: Independence MO. Posts: 7,715	Re: Wanted: NOS muffler 3996417 The muffler I need to fit my original application needs to have these slots on the inlet to be horizontal and not vertical. Attached Images __________________ 72 3/4t Custom Deluxe 402/auto 66k Original paint 71 3/4t 4x4 Custom Deluxe 10k original miles Original paint 71 3/4t Cheyenne 402 70k original paint 72 3/4t 4x4 Custom deluxe 72 3/4t 4x4 Custom deluxe 91k original paint 72 Cheyenne/30 Dually 69 Camaro SS396 4-speed 13 GMC 2500HD Duramax I bought new 05 Jeep Wrangler "Willys Edition" 12k miles (I bought new) 85 3/4 ton 4x4 Scottsdale 33k miles original paint 86 1 ton 4x4 SRW Silverado 454 restored 80 1 ton 4x4 SRW Silverado 9,434 original miles!! original paint 95 GMC 1 ton dually 4x4 my dad bought new 95 GMC 3/4 ton 4x4, regular cab 454, 31k original miles 2002 2500HD 4x4 regular cab 6.0L 67k miles 2002 2500HD 4x4 regular cab 8.1L 28k miles 2003 GMC 2500HD 4x4 regular cab Diesel 93k miles 67-72 Parts for sale

08-13-2021, 10:30 AM	#12
Joesjunk Senior Member Join Date: May 2001 Location: Independence MO. Posts: 7,715	Re: Wanted: NOS muffler 3996417 Still looking __________________ 72 3/4t Custom Deluxe 402/auto 66k Original paint 71 3/4t 4x4 Custom Deluxe 10k original miles Original paint 71 3/4t Cheyenne 402 70k original paint 72 3/4t 4x4 Custom deluxe 72 3/4t 4x4 Custom deluxe 91k original paint 72 Cheyenne/30 Dually 69 Camaro SS396 4-speed 13 GMC 2500HD Duramax I bought new 05 Jeep Wrangler "Willys Edition" 12k miles (I bought new) 85 3/4 ton 4x4 Scottsdale 33k miles original paint 86 1 ton 4x4 SRW Silverado 454 restored 80 1 ton 4x4 SRW Silverado 9,434 original miles!! original paint 95 GMC 1 ton dually 4x4 my dad bought new 95 GMC 3/4 ton 4x4, regular cab 454, 31k original miles 2002 2500HD 4x4 regular cab 6.0L 67k miles 2002 2500HD 4x4 regular cab 8.1L 28k miles 2003 GMC 2500HD 4x4 regular cab Diesel 93k miles 67-72 Parts for sale



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