FREE SHIPPING on orders above $249.99! Details

• Tractor Parts

• Engine Kits

• Carburetors

• Salvage

• Manuals

• DVDs

• Hats

• Contact Us

• Shipping Rates

• Return Policy

• Ordering Help

• Company Info

• Parts Warranty

• Forums

Ford 4121 Parts

Category: Engine Parts

[Categories] [All 4121 Parts] [All Ford Models]

No
Picture
2nd Speed Mainshaft Gear, Used - For Ford tractor models NAA, 8N, 600, 601, 611, 620, 621, 630, 631, 640, 641, 650, 651, 660, 661, 671, 681, 700, 701, 740, 741, 761, 771, 800, 801, 811, 820, 821, 840, 841, 850, 851, 860, 861, 871, 881, 900, 901, 941, 950, 951, 960, 961, 971, 981, 2000, 2031, 2100, 2120, 2130, 2131, 2300, 2310, 3000, 3100, 3110, 3120, 3190, 3300, 3310, 3330, 3400, 3500, 4000, 4030, 4031, 4110, 4120, 4121, 4130, 4131, 4140, 7530, Compatible with Ford Construction and industrial models 2030, 3550, 4040, Replaces Ford OEM number B9NN7A381B, Replaces Ford Casting nos 8N7101B, 8N7114B, Teeth: 56, Splines: 17, 3 and 4 Cylinder Tractors with 4 Speed Transmission, For a new version of this item use Item #: 108536, Used items are not always in stock. If we are unable to ship this part we will contact you within one business day., (Item #: 435402) $72.01

No
Picture
Camshaft Gear, Used - For Ford tractor models NAA, 501, 541, 600, 601, 611, 620, 621, 630, 631, 640, 641, 650, 651, 660, 661, 671, 681, 700, 701, 740, 741, 761, 771, 800, 801, 811, 820, 821, 840, 841, 850, 851, 860, 861, 871, 881, 900, 901, 941, 950, 951, 960, 961, 971, 981, 2000, 2031, 2110, 2111, 2120, 2130, 2131, 4000, 4030, 4031, 4110, 4120, 4121, 4130, 4131, 4140, Compatible with Ford Construction and industrial models 1801, 1811, 1821, 1841, 1871, 1881, 2030, 4040, 4140, Replaces Ford OEM number EAF6256M, Crankshaft Teeth: 21, Camshaft Teeth: 42, Camshaft I.D. 1.0", For a new version of this item use Item #: 121561, Used items are not always in stock. If we are unable to ship this part we will contact you within one business day., (Item #: 435994) $34.01

Camshaft, Used - For Ford tractor models NAA, 501, 541, 600, 601, 611, 620, 621, 630, 631, 640, 641, 650, 651, 660, 661, 671, 681, 700, 701, 740, 741, 761, 771, 800, 801, 811, 820, 821, 840, 841, 850, 851, 860, 861, 871, 881, 900, 901, 941, 946, 950, 951, 960, 961, 971, 981, 2000, 2031, 2100, 2111, 2120, 2130, 2131, 4000, 4000SU, 4030, 4031, 4110, 4120, 4121, 4130, 4131, 4140, Compatible with Ford Construction and industrial models 1801, 1811, 1821, 1841, 1871, 1881, 2030, 4040, Compatible with Ford Engine(s) 134 (gas), 172 (gas), Replaces Ford OEM number C0NN6251A, EAF6250F, 313077, Late style camshaft using snap ring groove, Long nose, 1" wide gear, For a new version of this item use Item #: 160917, Used items are not always in stock. If we are unable to ship this part we will contact you within one business day., (Item #: 436251) $122.01

Governor Compensating Spring - Mounts between Bellcrank and under battery tray, 6.535 inch overall length, .532 inch outside diameter, .070 inch wire diameter. For tractor models: 501, 600, 601, 700, 701, 800, 801, 900, 901, 1801, 1811, 1821, 1841, (2000, 4000 4-cylinder), 2030, 2031, 2111, 2120, 2130, 2131, 4030, 4031, 4040, 4120, 4121, 4130, 4140. All from 1954 thru 1964. (Item #: 178181, Ref: NCA9827A) $8.50

Main Shaft Gear, Used - For Ford tractor models NAA, 8N, 541, 600, 601, 620, 621, 630, 631, 640, 641, 700, 701, 740, 741, 800, 801, 840, 841, 2000, 2031, 2100, 2110, 2111, 2120, 2130, 2131, 2150, 2300, 2310, 3000, 3055, 3100, 3110, 3120, 3150, 3190, 3300, 3310, 3330, 3400, 3500, 3550, 4000, 4030, 4031, 4110, 4120, 4121, 4130, 4131, Compatible with Ford Construction and industrial models 1801, 1821, 1841, 2030, 4040, 4140, Replaces Ford OEM nos 8N7110, 4th Gear, Teeth: 39, Splines: 17, Inside Diameter: 1.783", Outside Diameter: 5.119", Used items are not always in stock. If we are unable to ship this part we will contact you within one business day., (Item #: 436813) $95.01

Transmission Gear - 3rd, Used - For Ford tractor models NAA, 8N, 501, 541, 600, 620, 621, 630, 631, 640, 641, 700, 800, 2000, 2031, 2100, 2110, 2111, 2120, 2130, 2131, 2150, 2300, 2310, 3000, 3055, 3100, 3110, 3120, 3150, 3190, 3300, 3310, 3330, 3400, 3500, 4000, 4000SU, 4030, 4031, 4120, 4121, 4130, 4131, 4140, Replaces Ford OEM number 8N7102, Teeth: 28 and 52, For a new version of this item use Item #: 172982, Used items are not always in stock. If we are unable to ship this part we will contact you within one business day., (Item #: 459492) $134.01

No
Picture
Transmission Input Shaft Select O Speed, Premium Used - For Ford tractor models 501, 541, 601, 701, 801, 901, 2000, 2031, 2110, 2111, 2120, 2130, 2131, 4000, 4031, 4110, 4120, 4121, 4130, 4131 (all with single speed PTO), 4140 (all with single speed PTO), Compatible with Ford Construction and industrial models 541, 1801, 1811, 1821, 1841, 1871, 1881, 4040, 4140 (all with single speed PTO), Replaces Ford OEM nos CFPN7B496H, Splines: 22, Shaft has sealing rings on each side of middle gear and an angle cut gear in the middle, (Item #: 300517) $415.01

NOTE

Valve Overhaul Kits - Valve Overhaul Kits are located in the Engine Overhaul Kits Section (if available for this tractor).

NOTE

Call 800-853-2651 to Order
Or Click the "Add to Cart" Button

Category: Engine Parts

[Categories] [All 4121 Parts] [All Ford Models]

Order Toll Free
(800) 853-2651
Mon-Fri 7am-7pm CT

Order online
anytime!

YESTERDAY's TRACTORS has been a leading tractor parts supplier on the internet since 1995. Join thousands of happy customers who have purchased parts and more for their antique tractor from us!

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Website Accessibility Policy

Privacy Policy