eBay

You are bidding on a Mopar speedometer gear part number 2538938. Gear has 38 teeth and is in good condition. Gear fits 1966 thru 1988, most 89 90 91 92, using the 4 1/2 inch speedo gear. Automatic transmission 727 904 A833, NP435. Manual 3 Speeds or 4 speeds. New revised chart to understand your gear choice. If you have any questions feel free to ask. Good Luck bidding.

Rear End gear ratio				REAR TIRE DIA
	24 inch	25 inch	26 inch	27 inch	28 inch	29 inch	30 inch	31 inch	32 inch	33 inch	34 inch	35 inch

2:76	30	29	28	27	26	25	24	23	23	22	21	+
	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth
2:94	32	31	30	29	28	27	26	25	24	23	23	22
	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth
3:23	35	34	33	32	31	30	29	28	27	26	25	24
	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth
3:55	39	37	36	34	33	32	31	30	29	28	27	26
	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth
3:73	41	39	38	36	35	34	33	32	31	30	29	28
	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth
3:91	43	41	40	38	37	35	34	33	32	31	30	29
	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth
4:10	45	43	41	40	38	37	36	35	34	33	32	31
	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth
4:30	+	45	43	42	40	39	38	36	35	34	32	32
			tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth
4:56	+	+	+	44	43	41	40	38	37	36	35	34
				tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth
4:88	+	+	+	+	45	44	43	41	40	39	38	37
					tooth	tooth	tooth	tooth	tooth	tooth	tooth	tooth
+ Do Not Make