SONNAX Standard Replacement Main Shaft — direct fit for Mercury Grand Marquis 4.6L V8 (1995-2008). Genuine quality replacement built to OEM tolerances, ships to all 50 USA states from RevXSC.
Engineered by SONNAX as a standard replacement grade main shaft for the 4.6L V8 engine, this 76670A01 matches factory mounting points and form factor so install requires no modification. Trans. code 4R70W; OE Part Number F8AZ 7F351 AA (Only 1 Remaining) Standard replacement spec — the same dimensions, materials and performance envelope as the original factory part.
| Year | Make / Model | Engine | Notes |
|---|---|---|---|
| 1995 | Mercury Grand Marquis | 4.6L V8 | Trans. code 4R70W; OE Part Number F8AZ 7F351 AA (Only 1 Remaining) |
| 1996 | Mercury Grand Marquis | 4.6L V8 | Trans. code 4R70W; OE Part Number F8AZ 7F351 AA (Only 1 Remaining) |
| 1997 | Mercury Grand Marquis | 4.6L V8 | Trans. code 4R70W; OE Part Number F8AZ 7F351 AA (Only 1 Remaining) |
| 1998 | Mercury Grand Marquis | 4.6L V8 | Trans. code 4R70W; OE Part Number F8AZ 7F351 AA (Only 1 Remaining) |
| 1999 | Mercury Grand Marquis | 4.6L V8 | Trans. code 4R70W; OE Part Number F8AZ 7F351 AA (Only 1 Remaining) |
| 2000 | Mercury Grand Marquis | 4.6L V8 | Trans. code 4R70W; OE Part Number F8AZ 7F351 AA (Only 1 Remaining) |
| 2001 | Mercury Grand Marquis | 4.6L V8 | Trans. code 4R70W; OE Part Number F8AZ 7F351 AA (Only 1 Remaining) |
| 2002 | Mercury Grand Marquis | 4.6L V8 | Trans. code 4R70W; OE Part Number F8AZ 7F351 AA (Only 1 Remaining) |
| 2003 | Mercury Grand Marquis | 4.6L V8 | Trans. code 4R70W; OE Part Number F8AZ 7F351 AA (Only 1 Remaining) |
| 2004 | Mercury Grand Marquis | 4.6L V8 | Trans. code 4R70W; OE Part Number F8AZ 7F351 AA (Only 1 Remaining) |
| 2005 | Mercury Grand Marquis | 4.6L V8 | Trans. code 4R70W; OE Part Number F8AZ 7F351 AA (Only 1 Remaining) |
| 2006 | Mercury Grand Marquis | 4.6L V8 | Trans. code 4R70W; OE Part Number F8AZ 7F351 AA (Only 1 Remaining) |
| 2007 | Mercury Grand Marquis | 4.6L V8 | Trans. code 4R70W; OE Part Number F8AZ 7F351 AA (Only 1 Remaining) |
| 2008 | Mercury Grand Marquis | 4.6L V8 | Trans. code 4R70W; OE Part Number F8AZ 7F351 AA (Only 1 Remaining) |
Always replace main shaft components in matched sets where applicable, torque fasteners to factory spec, and inspect adjacent transmission-automatic components for wear during installation. If you're not sure which variant matches your VIN, send us the last 8 digits of the VIN before checkout and we will confirm fitment.
Is 76670A01 a direct replacement?
Yes — SONNAX 76670A01 is built to OEM form/fit/function for the Mercury Grand Marquis 4.6L V8 (1995-2008).
Do you ship to my state?
We ship to all 50 USA states. Tracking is provided.
What's the difference between Economy, Standard Replacement and Heavy Duty?
Economy is the value-priced option for everyday driving; Standard Replacement matches OEM spec; Heavy Duty uses upgraded materials for towing, fleet and severe service.
How can I confirm fitment?
Match year, make, model and engine (1995-2008 Mercury Grand Marquis 4.6L V8). When in doubt, send your VIN — we verify before dispatch.
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Note: The product image is for illustrative purposes only. Actual product may vary slightly in appearance, packaging, or labeling. Fitment and specifications are guaranteed to OEM standards.