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OE Quality
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AP ExhaustPart #: 645479
AP Exhaust 645479 Catalytic Converter - Front
18 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$725.68Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship
Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Direct Fit Converter, Front
Fitment: Ram, 2500 and 3500
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? See all Catalytic Converter options
AP Exhaust 645479 Catalytic Converter - Front
| Brand | AP Exhaust |
|---|---|
| Part Number | 645479 |
| Position | Direct Fit Converter, Front |
| Converter Type | Federal / epa direct-fit |
| Clamp Quantity | 3 |
| Inlet Quantity | 2 |
| Body Material | Stainless steel |
| Outlet Quantity | 1 |
| California Air Resources Board (CARB) Certified | No |
| Substrate Material | Ceramic |
| Overall Length | 54.500 |
| Boxed | Yes |
| Inlet A Connection Type | Flare with spin flange |
| Inlet B Connection Type | Flare with spin flange |
| Inlet Gasket Quantity | 0 |
| Inlet Hardware | None |
| Inlet Type A | 2 bolt spinner |
| Inlet Type B | 2 bolt spinner |
| O2 Sensor Ports | 4 |
| Outlet A Connection Type | Welded flange |
| Outlet Gasket | None |
| Outlet Hardware | None |
| Outlet Type A | 2 bolt welded |
| Package Material | Corrugated cardboard |
| Package Type | Box |
This part fits 18 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2022 | Ram | 2500 | 6.4L | V8 | Front | Federal and California Emissions; Direct Fit Converter |
| 2022 | Ram | 3500 | 6.4L | V8 | Front | Federal and California Emissions; Direct Fit Converter |
| 2021 | Ram | 2500 | 6.4L | V8 | Front | Federal and California Emissions; Direct Fit Converter |
| 2021 | Ram | 3500 | 6.4L | V8 | Front | Federal and California Emissions; Direct Fit Converter |
| 2020 | Ram | 2500 | 6.4L | V8 | Front | Federal and California Emissions; Direct Fit Converter |
| 2020 | Ram | 3500 | 6.4L | V8 | Front | Federal and California Emissions; Direct Fit Converter |
| 2019 | Ram | 2500 | 6.4L | V8 | Front | Federal and California Emissions; Direct Fit Converter |
| 2019 | Ram | 3500 | 6.4L | V8 | Front | Federal and California Emissions; Direct Fit Converter |
| 2018 | Ram | 2500 | 6.4L | V8 | Front | Federal and California Emissions; Direct Fit Converter |
| 2018 | Ram | 3500 | 6.4L | V8 | Front | Federal and California Emissions; Direct Fit Converter |
| 2017 | Ram | 2500 | 6.4L | V8 | Front | Federal and California Emissions; Direct Fit Converter |
| 2017 | Ram | 3500 | 6.4L | V8 | Front | Federal and California Emissions; Direct Fit Converter |
| 2016 | Ram | 2500 | 6.4L | V8 | Front | Federal and California Emissions; Direct Fit Converter |
| 2016 | Ram | 3500 | 6.4L | V8 | Front | Federal and California Emissions; Direct Fit Converter |
| 2015 | Ram | 2500 | 6.4L | V8 | Front | Federal and California Emissions; Direct Fit Converter |
| 2015 | Ram | 3500 | 6.4L | V8 | Front | Federal and California Emissions; Direct Fit Converter |
| 2014 | Ram | 2500 | 6.4L | V8 | Front | Federal and California Emissions; Direct Fit Converter |
| 2014 | Ram | 3500 | 6.4L | V8 | Front | Federal and California Emissions; Direct Fit Converter |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.