I have a late 90's 6x4 with the FD620D-FS11 engine. Only around 500 hours, but unfortunately the exhaust/muffler has rusted through. Browsing the web, it looks like I need JD P/N AM127230 as a replacement, but WOW, the price is absolutely nuts! I know JD prices are high, but $300+...
Purchased a 625i with deluxe glass cab. It is like being inside a drum. JD has noise reduction kits (insulation and air filter relocation). They don't seem like they would make much difference.
Do they work very well? Any other ideas to reduce cab noise?