Genuine Yanmar 129A00-55800-HD Final Fuel Filter – MIU805005

Description

Genuine Yanmar 129A00-55800-HD High Efficiency Fuel Filter

Genuine Yanmar High Efficiency spin-on final fuel filter, part number 129A00-55800-HD, for select Yanmar common-rail marine, industrial, and construction-equipment engines.

This is Yanmar’s current -HD High Efficiency version of the filter. It supersedes the earlier Yanmar 129A00-55800 fuel filter and is supplied as a genuine Yanmar service part in Yanmar packaging.

The filter itself is marked HIGH EFFICIENCY. It is commonly used as the final or secondary stage of fuel filtration, downstream of the primary fuel/water separator and before fuel reaches the engine’s high-pressure injection system.

Modern common-rail injection systems are particularly sensitive to very fine contamination. The final fuel filter is an important line of defense for the high-pressure pump, fuel rail, and injectors.

This listing is for one genuine Yanmar 129A00-55800-HD High Efficiency filter—not a generic aftermarket replacement for the older 129A00-55800 number.

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Product Specifications

• Brand: Yanmar
• Manufacturer part number: 129A00-55800-HD
• Previous Yanmar number: 129A00-55800
• Part type: High Efficiency final / secondary diesel fuel filter
• Filter style: Spin-on
• Fuel system: Diesel
• Common fuel-system type: Common rail
• Thread: M22×1.5
• Condition: New
• Package quantity: One filter

Published dimensions for common equivalent filters are approximately 138–143mm in overall length and 76–84mm in outside diameter. Use the Yanmar part number and equipment-specific parts information as the primary means of confirming fitment.

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What Does “HD High Efficiency” Mean?

The 129A00-55800-HD is the current Yanmar service version of this filter and is marked directly on the filter as HIGH EFFICIENCY. It supersedes the earlier 129A00-55800 part number.

The High Efficiency designation is particularly relevant on modern common-rail diesel engines. These fuel systems use extremely close internal clearances in the high-pressure pump and injectors, making fine fuel contamination much more serious than it may have been on older mechanical injection systems.

A replacement filter should therefore be evaluated on more than whether it physically screws onto the filter head. Filter-media efficiency, contaminant-holding capacity, sealing quality, and fuel-flow characteristics all matter when protecting a high-pressure diesel fuel system.

We do not claim that every aftermarket filter crossing to 129A00-55800 has inadequate filtration. However, customers specifically looking for Yanmar’s current High Efficiency service filter should verify that they are purchasing the actual 129A00-55800-HD rather than an unspecified replacement for the earlier number.  We are guaranteeing it will be the upgraded, high efficiency filter.

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129A00-55800-HD Versus 129A00-55800

The earlier Yanmar filter is commonly listed as 129A00-55800. The current Yanmar service filter is 129A00-55800-HD and carries the High Efficiency marking.

• 129A00-55800: Earlier Yanmar fuel-filter part number
• 129A00-55800-HD: Current genuine Yanmar High Efficiency service filter

The 129A00-55800-HD is commonly supplied as the current replacement when the older 129A00-55800 number is specified.

Because similar aftermarket filters may continue to be marketed using the older 129A00-55800 number, customers who specifically want the current Yanmar High Efficiency filter should look for the complete 129A00-55800-HD number on any other vendor’s listings.

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Final Fuel Filter Versus Water Separator

The 129A00-55800-HD is normally used as the final or secondary fuel filter. It should not be confused with the separate primary fuel/water-separator element used on many of the same engines and machines.

A typical modern Yanmar fuel system may use:

1. Primary fuel/water separator: Removes larger contamination and allows separated water to collect for draining.
2. 129A00-55800-HD final fuel filter: Provides the final stage of filtration before fuel enters the high-pressure injection system.

If the part being replaced is a cartridge located inside a clear water-separator bowl, this is NOT the correct filter. The 129A00-55800-HD is a metal spin-on filter.

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Why the Final Fuel Filter Is Important

Modern diesel injection systems operate with extremely close internal tolerances. Fine dirt, rust, water contamination, and abrasive particles that might have caused little immediate trouble in an older mechanical fuel system can damage expensive common-rail components.

The final High Efficiency fuel filter helps protect:

• High-pressure fuel pump
• Common-rail pressure-control components
• Fuel rail
• Common-rail injectors
• Precision fuel-system valves and passages

Using the correct genuine Yanmar filter helps maintain the filtration, sealing, and fuel-flow characteristics intended for the engine.

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Common Signs of a Restricted Fuel Filter

A dirty or restricted final fuel filter may reduce the amount of diesel fuel available to the engine, especially as fuel demand increases.

Possible symptoms include:

• Longer-than-normal cranking before starting
• Hard starting
• Engine starts and then stalls
• Loss of power under load
• Engine runs normally at idle but struggles at higher speed
• Surging or uneven engine operation
• Reduced performance while digging, lifting, mowing, or operating under heavy load
• Recurring low fuel-pressure or fuel-supply symptoms
• Contaminated fuel found during filter replacement

These symptoms do not automatically mean the fuel filter is the problem. Similar symptoms can be caused by a restricted primary filter, air entering the fuel system, contaminated fuel, blocked fuel lines, a weak supply pump, tank-vent problems, or faults elsewhere in the injection system.

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Yanmar Part Numbers and Search References

• 129A00-55800-HD
• 129A0055800HD
• 129A00 55800 HD
• 129A00-55800
• 129A0055800
• YM129A00-55800-HD
• YM129A0055800HD
• YM129A0055800
• Y129A00-55800
• Y129A0055800
• Yanmar High Efficiency fuel filter
• Yanmar HD fuel filter

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Common Fuel Filter Cross References

The following numbers are commonly associated with the same filter family:

• John Deere: MIU805005
• John Deere: MIU802154
• John Deere: FYD00005703
• Donaldson: P553995
• Fleetguard: FF5638
• Baldwin: BF9910
• WIX: WF10176
• MANN-FILTER: WK8215
• HIFI Filter: SN21609 / SN40638
• Bobcat: 7029016
• Cummins: 4941163
• Cummins: 4942437
• Cummins: 4946635
• Doosan: 400403-00192
• Gehl: 50352551
• Hyster: 1691652
• JLG: 70022846
• Komatsu: 600-311-3530
• Komatsu: 600-319-3530
• Liebherr: 11692530
• New Holland: 48145969
• Takeuchi: Y129A0055800
• Yale: 580090996

Cross-reference numbers are provided for identification purposes. This listing supplies a genuine Yanmar 129A00-55800-HD High Efficiency filter and is not represented as a genuine part from any of the other manufacturers listed above.

A cross-reference also does not necessarily mean every replacement filter uses identical filter media or filtration specifications.

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Common Yanmar Marine Engine Applications

The 129A00-55800-HD is used as the final fuel filter on Yanmar common-rail JH-series marine engines including:

• Yanmar 3JH40
• Yanmar 4JH45
• Yanmar 4JH57
• Yanmar 4JH80
• Yanmar 4JH110

These engines are found in a wide variety of sailboats, motor yachts, auxiliary-engine installations, and marine applications.

Always verify the complete engine model and serial number before ordering. Earlier mechanically injected JH engines may use different filters.

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Common Yanmar Industrial Engine Applications

The same filter family is also used on select Yanmar industrial common-rail engines, including applications in the:

• 4TNV98 family
• 4TNV98T configurations
• 4TNV98C configurations
• 4TNV98CT configurations
• Additional TNV common-rail engines using 129A00-55800-HD, 129A00-55800, or a confirmed interchange number

Yanmar engine suffixes identify specific emissions, equipment, and fuel-system configurations. Verify the complete engine designation rather than relying only on the base 4TNV98 model.

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Yanmar Construction Equipment Applications

The 129A00-55800 filter family is used on select Yanmar excavators and construction equipment equipped with compatible common-rail TNV engines.

Published applications include certain:

• Yanmar ViO55-series excavators
• Yanmar ViO80-series excavators
• Yanmar SV100-series excavators
• Other Yanmar construction equipment using the matching common-rail engine and spin-on final filter

Yanmar construction equipment may use different filter arrangements depending on machine serial number and engine configuration. Confirm the original filter number before ordering.

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John Deere MIU805005 Applications

Yanmar 129A00-55800-HD / 129A00-55800 is commonly cross-referenced to John Deere MIU805005, which is used as a final fuel filter on numerous compact construction machines.

John Deere Excavators

• John Deere 50 / 50G
• John Deere 60G
• John Deere 75G
• John Deere 85G

John Deere Skid Steers and Compact Track Loaders

• John Deere 312GR
• John Deere 314G
• John Deere 316GR
• John Deere 317G
• John Deere 318E
• John Deere 318G
• John Deere 319E
• John Deere 320E
• John Deere 320G
• John Deere 323E
• John Deere 324E
• John Deere 324G
• John Deere 325G
• John Deere 326E
• John Deere 328E
• John Deere 329E
• John Deere 330G
• John Deere 331G
• John Deere 332E
• John Deere 332G
• John Deere 333E
• John Deere 333G

John Deere Wheel Loaders and Backhoes

• John Deere 204L
• John Deere 244K
• John Deere 244K-II
• John Deere 244L
• John Deere 304L
• John Deere 310G
• John Deere 310L EP
• Select 324K and 324L applications using the matching final filter

Important: This product is a genuine Yanmar-branded filter supplied in Yanmar packaging. The John Deere numbers are provided only as cross-reference and application information. It is not packaged or represented as a genuine John Deere filter.

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Bobcat Applications

Cross-reference catalogs associate this filter family with select Bobcat excavators using compatible diesel engines, including:

• Bobcat E62
• Bobcat E63 with the applicable engine configuration
• Select Bobcat E85 configurations

Bobcat reference 7029016 is commonly associated with this filter family.

Verify the machine serial number and engine before ordering, especially on models produced with more than one engine configuration.

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Komatsu Applications

The same filter family is also cross-referenced for select Komatsu diesel equipment.

Published applications include certain:

• Komatsu PC78US-8
• Komatsu PC88MR-8
• Komatsu PC130-8
• Komatsu PC138US-8
• Komatsu D31EX-22
• Komatsu D31PX-22
• Komatsu D37EX-22
• Komatsu D37PX-22
• Komatsu WA100M-6
• Select Komatsu forklifts and industrial equipment using the matching filter

Common Komatsu cross-reference numbers include 600-311-3530 and 600-319-3530.

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Additional Equipment Applications

Cross-reference catalogs also associate this filter family with select equipment from manufacturers including:

• Case Construction
• Doosan
• Dynapac
• Gehl
• Hitachi
• Husqvarna
• Hyster
• Hyundai Construction
• JLG
• Liebherr
• New Holland
• Sany
• Takeuchi
• Yale

These manufacturers may use several engines and filter configurations within the same equipment family. Cross-reference the old filter number or consult the machine-specific parts catalog before ordering.

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How to Confirm the Correct Filter

The safest way to confirm fitment is to match at least one of the following:

• Your original filter is marked 129A00-55800-HD or 129A00-55800
• The engine parts manual specifies 129A00-55800-HD or 129A00-55800
• The machine parts catalog specifies MIU805005, MIU802154, P553995, FF5638, BF9910, WF10176, or another confirmed interchange
• The engine manufacturer or equipment dealer confirms the filter using the complete model and serial number

Do not order solely by equipment color, horsepower, or a general engine family. Filter arrangements can change at serial-number breaks and when engines or complete filter housings have been replaced.

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When Should the Fuel Filter Be Replaced?

Follow the maintenance schedule supplied with the specific engine or machine.

Filter replacement may be required sooner when:

• Fuel contamination is suspected
• Water is found in the fuel system
• The machine has been sitting for an extended period
• The fuel tank has been cleaned or repaired
• The engine develops fuel-starvation symptoms
• Contaminated fuel was accidentally added
• The primary water separator contains significant contamination

Because the final filter protects expensive high-pressure injection components, delaying replacement of a known contaminated or restricted filter is rarely worth the risk.

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Installation Notes

• Clean dirt and debris from around the filter before removal.
• Shut off the fuel supply when the equipment is fitted with a fuel shutoff valve.
• Remove the old filter according to the engine manufacturer’s service procedure.
• Make sure the old sealing gasket comes off with the old filter.
• Clean the filter-head sealing surface.
• Lubricate the new filter gasket with clean diesel fuel or as directed by the service manual.
• Thread the new filter on by hand to prevent cross-threading.
• Tighten according to Yanmar or equipment-manufacturer instructions.
• Prime or bleed the low-pressure fuel system after replacement when required.
• Start the engine and carefully inspect the filter for fuel leakage.
• Recheck the installation after the engine has operated under load.

Common-rail fuel systems operate at extremely high pressure on the injection side. Do not loosen high-pressure injector lines or common-rail components while the engine is running.

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Why Choose the Genuine Yanmar High Efficiency Filter?

• Current genuine Yanmar 129A00-55800-HD service part
• Filter is marked HIGH EFFICIENCY
• Supersedes earlier Yanmar 129A00-55800
• Designed for Yanmar high-pressure diesel fuel systems
• Correct spin-on configuration and sealing arrangement
• Used as the final / secondary stage of fuel filtration
• Used across Yanmar marine, industrial, and construction-engine applications
• Strong cross-reference coverage for John Deere and other equipment
• Original Yanmar packaging
• Suitable for scheduled maintenance by equipment owners and professional repair shops

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Fitment and Trademark Notice

Yanmar, John Deere, Bobcat, Komatsu, Donaldson, Fleetguard, Baldwin, WIX, MANN, HIFI, Cummins, Doosan, Gehl, Hitachi, Takeuchi, and other manufacturer names and part numbers are used for identification and fitment-reference purposes only. This listing supplies a genuine Yanmar product and does not represent the filter as being manufactured or packaged by any other equipment or filter manufacturer.