Ford Racing 2015-2017 Automatic IRS Pinion Flange - M-4851-M8A
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- UPC:
- 756122004142
- 2025 Ford MustangDark Horse, Dark Horse Premium, EcoBoost
- 2016-2017 Ford MustangEcoBoost
- 2025 Ford MustangEcoBoost Premium
- 2016-2017 Ford MustangEcoBoost Premium
- 2015-2025 Ford MustangGT
- 2015 Ford MustangGT 50 Years Limited Edition
- 2025 Ford MustangGT Premium
- 2015-2017 Ford MustangGT Premium
- 2016-2017 Ford MustangShelby GT350, Shelby GT350R, V6
- Part number
- FRPM-4851-M8A
- Manufacturer part number
- M-4851-M8A
- UPC
- 756122004142
- Brand
- Ford Racing
- Part type
- Pinion Flanges
- Prop 65
- ⚠️ WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov
- Special order
- Yes — ordered in for you; allow extra time
- Instructions
- Installation instructions (PDF)
Installation guide (from Ford Racing)
Hosted by Ford Racing. Follow the maker's instructions and torque specs.
- Box size:
- 8.50 × 7.50 × 10.70 (in)
Complete the job
Read before you buy
Over the years, racing has become big business for teams, sponsors, and manufacturers around the world. However, 'grassroots' motorsports remain at the core of Ford's DNA. Grassroots performance began with Ford and has become a part of American culture. The Model A is the most modified car in history, and enthusiasts the world over continue to embrace Ford, Mercury, and Lincoln cars and trucks from the 1930s right on through to today. Road racers, drag racers. circle track competitors and street rodders have channeled, stepped-on, hopped-up, chopped down and modified their favorite cars to excel on the street, at the track, and in car shows. The Ford Mustang immediately became part of this culture when it was introduced in 1964-and remains a staple of grassroots performance to this day. In 2014, Mustang marks 50 years of winning, and has driven its way into racing history. Moreover, the car's appeal is universal; a recent European study identified Mustang as the most desirable classic car in Europe. Motorsports continue to evolve, with advances in technology and greater demand for smaller powertrains, as well as growing appetite for new formats like Rally Cross and Drifting. How it develops in the next 50 years remains to be seen, but we intend to be there to celebrate it, thanks to passionate enthusiasts like you, who have driven the success of Ford, Ford Racing and Mustang since the beginning.
Over the years, racing has become big business for teams, sponsors, and manufacturers around the world. However, 'grassroots' motorsports remain at the core of Ford's DNA. Grassroots performance began with Ford and has become a part of American culture. The Model A is the most modified car in history, and enthusiasts the world over continue to embrace Ford, Mercury, and Lincoln cars and trucks from the 1930s right on through to today. Road racers, drag racers. circle track competitors and street rodders have channeled, stepped-on, hopped-up, chopped down and modified their favorite cars to excel on the street, at the track, and in car shows. The Ford Mustang immediately became part of this culture when it was introduced in 1964-and remains a staple of grassroots performance to this day. In 2014, Mustang marks 50 years of winning, and has driven its way into racing history. Moreover, the car's appeal is universal
a recent European study identified Mustang as the most desirable classic car in Europe. Motorsports continue to evolve, with advances in technology and greater demand for smaller powertrains, as well as growing appetite for new formats like Rally Cross and Drifting. How it develops in the next 50 years remains to be seen, but we intend to be there to celebrate it, thanks to passionate enthusiasts like you, who have driven the success of Ford, Ford Racing and Mustang since the beginning.
Pinion Flange; 8.8 in. IRS Automatic Pinion Flange; For Use w/PN [M4001-88373T/M-4001-88355];
- Clearance Item:
- N
- LTL:
- N
- MPN:
- M-4851-M8A
- Proposition 65:
- Y
- Special Order:
- Y
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Ford Racing
Ford Racing 2015-2017 Automatic IRS Pinion Flange - M-4851-M8A
Ford Racing 2015-2017 Automatic IRS Pinion Flange - M-4851-M8A FAQ
It is listed for: 2025 Ford Mustang; 2016-2017 Ford Mustang; 2025 Ford Mustang and more (see the full list above). Pick your vehicle on this page to check your exact year and trim.
The maker's installation guide is on this page — see Installation guide under the part details for the step-by-step and the torque figures. Work on level ground with the car properly supported, and torque every fastener to the maker's figure. If the job is beyond your tools, any shop that does this kind of work can fit it.
What's in the box above lists what the maker includes when we have it, and the maker's guide names any tools or extra parts.
Many parts are bolt-on jobs with hand tools; the maker's guide on this page shows the steps and the torque figures. If it is beyond your tools, a shop can fit it.
Check the vehicle list above against your exact year and trim before ordering. If something is off, call or text us at 813-535-5801 and we will sort it out.
Yes — monthly options show right under the Add to Cart button. Affirm, Klarna, PayPal Pay Later and Snap Finance are offered at checkout, and checking what you qualify for does not affect your credit score.
Install and care: Pinion Flanges
- Before you start, read the maker's guide on this page end to end and lay out every part against the What's in the box list.
- Do torque every fastener to the maker's figure with a torque wrench, and re-check it after the first drive.
- Don't force a part that does not line up: check the vehicle list on this page against your exact year and trim first.
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