Engine Water Pump with Gasket (Impeller Ø 94 mm) for John Deere PowerTech 4.5L / 6.8L - Part Number: 74712077

The engine coolant water pump (part number 74712077, primary OEM reference 74712077, featuring an enlarged Ø 94 mm impeller and supplied complete with mounting gasket) is an OEM-standard replacement component engineered for John Deere PowerTech 4.5-liter and 6.8-liter diesel engines. Equipped with heavy-duty sealed bearing assemblies and premium mechanical face seals, it provides forced coolant circulation under extreme agricultural field conditions, preventing thermal spikes, head gasket failures, and cavitation across an extensive range of John Deere tractors, telehandlers, and combine harvesters.

Key Features & Engineering Benefits

• Precision-Engineered Ø 94 mm Impeller: Hydrodynamically balanced vanes ensure continuous, high-volume coolant flow across all engine RPMs, ensuring thermal stability under heavy towing and PTO workloads.
• Supplied Complete with Form-Fitted Gasket: Includes a dedicated mating gasket for leak-free sealing directly against the engine block face, eliminating coolant seepage without messy silicone adhesives.
• Heavy-Duty Mechanical Seal: Sintered face materials resist ethylene glycol and modern organic acid technology (OAT) coolant corrosion, maintaining seal integrity under high thermal and hydraulic loads.
• High-Capacity Double-Row Bearings: Sealed-for-life bearing unit resists lateral belt pull forces, preventing shaft misalignment, axial play, and operational chatter.
• Direct OEM Interchangeability (Plug & Play): CNC-machined mounting flange meets strict John Deere specifications, directly interchanging with OEM codes DZ128224, RE546906, RE505980, RE508566, and RE70962.

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, 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 drain and flush the cooling circuit before installing the replacement pump to clear abrasive scale, rust particles, and sludge that can score new mechanical seals. Clean the engine block mating surface thoroughly. Install the included gasket dry without using unauthorized liquid sealers or grease. Tighten all fastening bolts evenly in a diagonal pattern to the torque values specified in the John Deere workshop service manual. Refill with approved antifreeze, bleed the air from the system, and run the engine to operating temperature to verify leak-free circulation.