Mud flaps

[Leirhiht]

Got an 09 lariat 4x4 with fender flare moldings. I've been looking at the OEM ford mud flaps and I've come across 2 different numbers. 6L3Z-16A550-BA-T-509 and 4L3Z-16A550AAA. They both have the same description and I was wondering if anyone has installed either of these numbers? Also is there any drilling involved?

[pizzaman711]

Possibly a left and right side part number.

[BeauFlex]

A LT & RT part # will usually be the same exact # except with one character at the end of the # being changed do designate LT or RT.

One might be an actual OEM supplied mudguard of which you can buy LT & RT seperately and one might be an accessorry mud guard which they sell as a pair.

or it might be 2 totally seperate styles of mud guard.

I would suggest calling your local dealer's parts department. Give them that last 8 caharacters of you VIN and give them those part #'s. Based upon you VIN they can tell you what the difference between the part #'s is and if they will fit your particular model of F-150.