Engine Water Pump Radial O-Ring Gasket for John Deere PowerTech 4.5L / 6.8L - Part Number: 74712297

The water pump radial O-ring sealing gasket (part number 74712297, original manufacturer references R123226, R136516) is an OEM-standard toroidal sealing component specifically engineered for the cooling water pump assembly (matched with water pump 74712077 and flat mounting gasket 74712103) on John Deere PowerTech 4.5-liter and 6.8-liter diesel engines. Molded from an advanced, highly resilient elastomer resistant to elevated cooling system temperatures and modern glycol/OAT additives, it provides reliable radial sealing to eliminate coolant leaks and maintain pressure stability across John Deere tractors, telehandlers, and combine harvesters.

Key Features & Benefits

• Precision Radial Sealing: Form-matched circular cross-section seats securely into the pump mating groove with calibrated interference, preventing coolant bypass under all operating pressures.
• Thermal & Chemical Aging Resistance: Premium elastomeric polymer compound maintains elasticity and resists permanent compression set under high thermal cycling and exposure to organic acid technology (OAT) coolants.
• Vibration & Expansion Tolerance: Compensates for differential expansion between cast-iron and aluminum engine parts while dampening harmonic engine vibrations.
• Direct OEM Specification Match: Fully compliant with John Deere dimensional and material standards, serving as a direct replacement for OEM part numbers R123226 and R136516.
• Clean, Paste-Free Installation: Installs cleanly into the machined radial recess using only a light film of fresh coolant, eliminating the need for RTV silicone sealers.

Technical Specifications

John Deere Vehicle Application Coverage

Series Family	Compatible Tractor & Equipment Models
5E / 5G / 5M / 5R / 5RN Series	5083E, 5083EN, 5085E, 5093E, 5093EN, 5101E, 5101EN | 5080G, 5080GF, 5080GV, 5090G, 5090GF, 5090GH, 5090GV, 5100GF, 5100GV | 5070M, 5075M, 5080M, 5085M, 5090M, 5095M, 5100M, 5100RN, 5105M, 5115M, 5115ML | 5080R, 5080RN, 5090R, 5090RN, 5100R, 5100RN
6D / 6E / 6L / 6MC Series	6100D, 6105D, 6110D, 6115D, 6125D, 6130D, 6140D | 6105E | 6510L, 6520L | 6090MC
6M / 6R Series	6105M, 6110M, 6115M, 6120M, 6125M, 6130M, 6135M, 6140M, 6145M, 6150M | 6105R, 6110R, 6115R, 6120R, 6125R, 6130R, 6135R
6005 / 6010 / 6010SE / 6015 Series	6205, 6505 | 6010, 6110, 6210, 6310, 6410, 6510, 6510S, 6610, 6810, 6910, 6910S, SE6010, SE6110, SE6210, SE6310, SE6410, SE6510, SE6610 | 6215, 6215 (PC4367), 6415, 6515, 6715
6020 / 6020SE / 6025 Series	6020, 6120, 6120 (PC4356), 6220, 6320, 6320 (PC4357), 6420, 6420 (PC4357), 6420S, 6520, 6620, 6820, 6920, 6920S, SE6020, SE6120, SE6220, SE6320, SE6420, SE6520, SE6620, SE6920 | 6225, 6325, 6425, 6525
6030 / 6030 Premium Series	6130, 6230, 6230 PR, 6330, 6330 PR, 6430, 6430 PR, 6530, 6530 PR, 6534, 6534 PR, 6630, 6630 PR, 6830, 6830 PR, 6930, 6930 PR
7005 / 7010 / 7020 / 7030 / 7210 Series	7405 | 7610, 7710, 7810 | 7720, 7820, 7920 | 7130, 7130 PR, 7230, 7230 PR, 7330 PR, 7430 PR, 7530 PR, 7630, 7730, 7830, 7930 | 7210
Utility & Classic Series (11, 20, 22, 5000)	1165, 1170 | 4620, 5520N | 2254 | 5080, 5090 | 5310, 5310N, 5410, 5510, 5510N | 5415, 5515, 5615 | 5520, 5320N, 5420N, 5620, 5720, 5820 | 5425N, 5525N, 5625
Telehandlers (3000 Series)	3200, 3400, 3800 | 3210, 3310, 3410 | 3215, 3415 | 3220, 3420
Combine Harvesters (CWS, W, WTS, T)	CWS 1450, CWS 1550, 1450, 1470, 1550, 1570 | T550 | W540, W550, W650 | WTS 1450, WTS 1550, WTS 9540, WTS 9540i, WTS 9560, WTS 9560i, WTS 9580, WTS 9580i

Installation & Service Note: Thoroughly clean the radial sealing groove to remove scale, corrosion, and old rubber residue. Lightly lubricate the new O-ring with clean engine coolant before sliding it into position to ensure smooth seating without twisting, pinching, or cutting during assembly. Avoid the use of petroleum-based greases or liquid gasket paste.