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AP ExhaustPart #: 771388
AP Exhaust 771388 Catalytic Converter - Front Left
⚙️ 6 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$702.85Free 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
📦GGMXV03.6166, Front Left
🚗Fitment: Buick, LaCrosse
🔄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? Click here for all Catalytic Converter options
AP Exhaust 771388 Catalytic Converter - Front Left
| Brand | AP Exhaust |
| Part Number | 771388 |
| Position | GGMXV03.6166, Front Left |
| Body Material | Stainless steel |
| Executive Order | D-798-9 |
| Inlet Gasket | None |
| Inlet Hardware | None |
| Inlet Type A | 4 bolt welded flange |
| Issued Company | Ap exhaust holdings, llc |
| O2 Sensor Ports | 2 |
| Outlet Gasket | Yes |
| Outlet Hardware | Yes |
| Outlet Type A | 2 bolt welded flange |
| Overall Length (IN) | 16 |
| Substrate Material | Ceramic |
| Type | Carb compliant direct-fit |
This part fits 6 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2016 | Buick | LaCrosse | 3.6L | V6 | Front Left | Direct Fit - California; GGMXV03.6166; ALL; Legal Note: In Compliance with California Emissions Requirements; EO Number : D-798-9; GGMXV03.6166; GGMXV03.6166 |
| 2015 | Buick | LaCrosse | 3.6L | V6 | Front Left | Direct Fit - California; FGMXJ03.6166; ALL; Legal Note: In Compliance with California Emissions Requirements; EO Number : D-798-9; FGMXJ03.6166; FGMXJ03.6166 |
| 2014 | Buick | LaCrosse | 3.6L | V6 | Front Left | Direct Fit - California; EGMXJ03.6166; ALL; Legal Note: In Compliance with California Emissions Requirements; EO Number : D-798-9; EGMXJ03.6166; EGMXJ03.6166 |
| 2013 | Buick | LaCrosse | 3.6L | V6 | Front Left | Direct Fit - California; DGMXJ03.6166; ALL; Legal Note: In Compliance with California Emissions Requirements; EO Number : D-798-9; DGMXJ03.6166; DGMXJ03.6166 |
| 2012 | Buick | LaCrosse | 3.6L | V6 | Front Left | Direct Fit - California; CGMXJ03.6166; ALL; Legal Note: In Compliance with California Emissions Requirements; EO Number : D-798-9; CGMXJ03.6166; CGMXJ03.6166 |
| 2010 | Buick | LaCrosse | 3.0L | V6 | Front Left | Direct Fit - California; AGMXJ03.0157; ALL; Legal Note: In Compliance with California Emissions Requirements; EO Number : D-798-9; AGMXJ03.0157; AGMXJ03.0157 |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.