Try here
RV Furnace Repair Parts Online Catalog - PPL Motor Homes
Go into the "Online parts catalog", then under "search by category" pick Hydroflame. Then scroll down to the Hf8000 series then under the P series. They have a "show diagram" that has the entire furnace exploded views.
I would suggest calling them with the model and serial number to make sure you get what you after. The series did not 100% drill down to your number. There may be an upgraded gas valve. Also know what kind the valve is White Rogers or Robert Shaw.
On the older ones often time upgraded components are common.
The PPL site has an agreement with RV Dealership in Elkhart IN. When you click into that catalog you are on the RV Dealership site and is sold through PPL. The packing slip will show RV Dealership and sold by PPL. I have bought from them with positive results.
This is only one option, there are other online RV parts retailer for Atwood, just the PPL site is the only one I have seen with the exploded diagrams.
Hope this helps
John
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Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
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