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2004 XC-70, aftermarket resonator replacement?

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive P2 platform cars sold as model years 2001-2007 (North American market year designations).

2001 - 2007 V70
2001 - 2004 V70 XC (Cross Country)
2004 - 2007 XC70 (Cross Country)
2001 - 2009 S60
2003 - 2007 S60 R
2004 - 2007 V70 R

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Herb Goltz
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2004 XC-70, aftermarket resonator replacement?

Post by Herb Goltz »

Hi All:

My newly-acquired 2004 XC-70's resonator (the front muffler) has blown out. Has anyone found a good aftermarket one to have welded in? The car only has 134k km, so the pipes are in great shape, so I would rather go this route than a cat-back, which only seems to last 2-3 years on salty Canadian roads. I have a good muffler shop that usually does welding for me.

That said, I suspect the rear muffler won't be too far behind. Any tips on what to use there? I have had a bit of sticker shock looking at aftermarket direct fit systems...


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Post by SuperHerman »

If I recall correctly I bought a Walker unit from Rockauto, just looked and it is under $50. Worked just fine for the 30k or so miles until I sold the car. Mounting was not an issue.

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Post by Blacklab467 »

I put a Walker on mine from the Cat to the muffler 5 years ago, it was a near perfect fit and still in great shape on salty roads, I used a OEM muffler from the boneyard because I found a perfect one and the aftermarket muffler was over $300.
2003 XC 70, 2007 Duramax LBZ.

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Post by br0dy519 »

My mechanic offered to weld in a piece of straight pipe for $75 CAD all in. I think JRL calls it his resonator mod or something, he’s very proud about it :mrgreen:
His- 04 S60 - 300km
Hers- 04 XC70 - 290km

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Post by - Pete - »

With a section of pipe in there vs a resonator it really doesn’t change the loudness very much at all. These I5’s sound very nice with a little relief applied to the original exhaust system.

You’ll have a little deeper tone and a slight “pop” on decel, other than that, not much change at all.
2001 V70XC 167k
2004 V70 AWD 147k
2004 V70R M66 146k
2004 XC70 299k
2006 XC70 155k Sold

Herb Goltz
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Year and Model: 2004 & 2006 XC-70
Location: Aurora, ON, Canada
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Post by Herb Goltz »

Thanks all! I went with a welded-in aftermarket resonator. My exhaust guy likes to preserve the original pipes as long as possible, as the replacement cat-back systems really don't last on salty Canadian roads...

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