PART NUMBER	RATIO	AXLE
MUSTANG/RANGER/F-150 8.8"
M-4209-F308*	3.08:1	-
M-4209-F327*	3.27:1	-
M-4209-G355M*	3.55:1	-
M-4209-F373N*	3.73:1 ³	-
M-4209-G410*	4.10:1	-
M-4209-G430M*	4.30:1	-
M-4209-G456*	4.56:1	-
M-4209-G488*	4.88:1	-
M-4209-G513*	5.13:1 ¹	-
MUSTANG/RANGER 7.5"
M-4209-L345*	3.45:1	-
M-4209-L373M*	3.73:1	-
M-4209-L410N*	4.10:1	-
5.4L F-150, EXPEDITION, NAVIGATOR ²
M-3410-L410*	4.10:1	8.8" (front) 1996-97
M-4209-H373*	3.73:1	9.75" (rear)
M-3410-L373*	3.73:1	8.8" (front)

NOTES: ¹ May require rear cover modifications. ² These ring and pinions have been developed to increase towing capability of 5.4L Expeditions. ³ Replaces our popular M-4209-F373. New manufacturing technology utilizing a Face Hob Process which features a single pass pinion tooth machining operation compared to a conventional three pass process for machining. CNC cut and lapped gear teeth. Higher strength and better quality gears are produced with the Face Hob Process. NOTE: These new gears look a little different, the gear teeth are cut on a different angle and the ring gear has a bevel on the back of the gear.