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Diesel Engines & Parts
Weichai WP13 Cylinder Head 1000721713 Diesel Engine Parts
Weichai WP13 Cylinder Head 1000721713 Diesel Engine Parts
Weichai WP13 Cylinder Head 1000721713 Diesel Engine Parts
Weichai WP13 Cylinder Head 1000721713 Diesel Engine Parts

Weichai WP13 Cylinder Head 1000721713 Diesel Engine Parts

Model: WP13

Part Number: 1000721713

Brands: Weichai Power

Engine Model: WP13, WP13.480, WP13.500, WP13.550, WP13.580

Engine Type: Diesel

Scope of application: heavy haulage trucks, mining dump trucks, construction machinery, generator sets

A head built for high-output 13-litre duty

As ratings rose through the WP13 range, the cylinder head had to carry higher firing pressures and more heat through the same package size. Part 1000721713 is the head used on these high-output variants, with a deck and water jacket designed for continuous full-load operation in mining haul trucks and long-distance tractor units.

The head is the interface between combustion and everything around it: it seals the bore, routes coolant around the injector and valve bridges, and holds the valve train in alignment. Any weakness in the deck, the seat area or the injector bore turns into coolant loss, compression loss or a misfire that no injector change will cure.

Where this head is used

The 1000721713 casting is fitted to WP13 engines in heavy trucks and industrial equipment. Applications include HOWO and Shacman tractor units, 8x4 mining dump trucks, large loaders and 300 to 500 kVA generator sets. It is not interchangeable with the earlier WP13 head 612700040030; the injector bore and coolant outlet positions differ, so match the casting number before ordering.

Casting control and machining tolerances

Every head is cast in high-grade iron, stress relieved and machined. The checks that matter most for reliability:

  • Deck flatness in both directions, so the steel gasket seals without over-clamping.
  • Fire ring land depth, which controls how the gasket is compressed around each bore.
  • Valve seat angle and width, measured so the valves seal across the full face.
  • Injector bore concentricity, so the copper washer seals evenly and does not blow out.
  • Pressure test of the water jacket at above operating pressure.

Heads are shipped assembled with valves and springs unless a bare unit is requested, oiled on machined faces and packed in a foam-lined carton suitable for sea freight.

Early warning signs

  • Coolant pushed out of the expansion tank under load
  • White exhaust smoke that does not clear after warm-up
  • Coolant turning black or oil turning milky
  • Overheating that returns soon after a thermostat or pump replacement
  • Compression loss on adjacent cylinders with no ring or valve cause
  • Hairline cracks visible between valve seats or at the injector bore

Confirm with a cooling system pressure test and a combustion gas test before stripping the head. Both take minutes and prevent unnecessary work.

Installation sequence

  1. Clean the block deck and check flatness across both axes.
  2. Fit a new multi-layer steel gasket and new head bolts.
  3. Torque in the factory sequence in three stages, then angle tighten.
  4. Set valve clearance after the first heat cycle.
  5. Fill and bleed the cooling system with the specified mixture.
  6. Check injector clamp torque and look for seepage after 500 km.

Never reuse torque-to-yield bolts, and never add sealant to a steel head gasket. Both mistakes cause uneven clamping and repeat failures.

Matching the head to the engine

Identify the engine by the plate on the block and the casting number on the old head. High-output variants can share the same external dimensions as lower-rated ones while differing internally. Send us both numbers and a photo of the injector seat, and our team will confirm the correct part before shipping.

Keeping the head reliable

Cooling is the dominant factor. Keep the correct coolant concentration, replace the water pump and thermostat on schedule, clean the radiator externally in dusty operations and check the aftercooler for restrictions. A head that runs hot will warp regardless of how well it was made.

Packing, freight and delivery time

A cylinder head is delicate on its deck and valve faces, so packing is part of the product. Heads are fixed to a timber skid, with the deck covered and the valve train protected, then banded so nothing moves in transit. Cartons are marked with lifting points and a this-way-up symbol.

If you are consolidating the head with a block in one container, tell us in advance so we can load the heavy items first and pack smaller parts around them. Stock sizes normally leave our warehouse in three to five working days, and sea freight to Africa, the Middle East and Latin America typically takes twenty-five to forty days depending on the port.

FAQ

Is this head supplied with valves?

Yes, complete with valves, springs and retainers unless you request a bare head.

Can I use the old head bolts?

No. They are torque-to-yield and must be replaced each time the head is removed.

How do I know if my engine needs 1000721713 or 612700040030?

Check the casting number on the existing head and the engine plate. The two heads are not interchangeable.

What causes the injector copper washer to blow out?

Usually an incorrect seat depth or a worn washer seat. Both are checked on every head we supply.

Related parts and categories

See the Weichai cylinder head category, and complete the top end with the WP13 cylinder liner 612700010010 or the WP13 cylinder block 612700010001.

Description

We offer OEM quality and excellent after-sales service as a complementary option. Engine brands supported include Weichai, Baudouin, Yuchai, Caterpillar, FAW Xichai, Sinotruk, Cummins and other engine parts. Specifically engine overhaul kits, pistons, cylinder liners, crankshafts, camshafts, fuel pumps, water pumps, lube pumps, injectors, and other performance parts.

If you are not sure about the part number that you need, please provide all the information you have, such as the equipment nameplate, engine nameplate or engine number, or real photos.

EPID diesel engine parts warehouse

A head built for high-output 13-litre duty

As ratings rose through the WP13 range, the cylinder head had to carry higher firing pressures and more heat through the same package size. Part 1000721713 is the head used on these high-output variants, with a deck and water jacket designed for continuous full-load operation in mining haul trucks and long-distance tractor units.

The head is the interface between combustion and everything around it: it seals the bore, routes coolant around the injector and valve bridges, and holds the valve train in alignment. Any weakness in the deck, the seat area or the injector bore turns into coolant loss, compression loss or a misfire that no injector change will cure.

Where this head is used

The 1000721713 casting is fitted to WP13 engines in heavy trucks and industrial equipment. Applications include HOWO and Shacman tractor units, 8x4 mining dump trucks, large loaders and 300 to 500 kVA generator sets. It is not interchangeable with the earlier WP13 head 612700040030; the injector bore and coolant outlet positions differ, so match the casting number before ordering.

We Are 30 Years Diesel Engine Parts Supplier
BrandEPID
Warranty12 Months
Condition100%New
More ModelsWeichai: WP13, WP13.480, WP13.500, WP13.550, WP13.580, and other Weichai series.
ShippingBy sea / air / express (DHL, FEDEX, TNT, UPS, EMS)
PackingStandard exporting packing or as required
Payment TermL/C, T/T, Western Union, Trade Assurance
Delivery Time3-7 days (depend on order)
Selling Point1. On-time Delivery   2. Genuine Quality Assurance   3. Professional Supplier

Casting control and machining tolerances

Every head is cast in high-grade iron, stress relieved and machined. The checks that matter most for reliability:

  • Deck flatness in both directions, so the steel gasket seals without over-clamping.
  • Fire ring land depth, which controls how the gasket is compressed around each bore.
  • Valve seat angle and width, measured so the valves seal across the full face.
  • Injector bore concentricity, so the copper washer seals evenly and does not blow out.
  • Pressure test of the water jacket at above operating pressure.

Heads are shipped assembled with valves and springs unless a bare unit is requested, oiled on machined faces and packed in a foam-lined carton suitable for sea freight.

Early warning signs

  • Coolant pushed out of the expansion tank under load
  • White exhaust smoke that does not clear after warm-up
  • Coolant turning black or oil turning milky
  • Overheating that returns soon after a thermostat or pump replacement
  • Compression loss on adjacent cylinders with no ring or valve cause
  • Hairline cracks visible between valve seats or at the injector bore

Confirm with a cooling system pressure test and a combustion gas test before stripping the head. Both take minutes and prevent unnecessary work.

Installation sequence

  1. Clean the block deck and check flatness across both axes.
  2. Fit a new multi-layer steel gasket and new head bolts.
  3. Torque in the factory sequence in three stages, then angle tighten.
  4. Set valve clearance after the first heat cycle.
  5. Fill and bleed the cooling system with the specified mixture.
  6. Check injector clamp torque and look for seepage after 500 km.

Never reuse torque-to-yield bolts, and never add sealant to a steel head gasket. Both mistakes cause uneven clamping and repeat failures.

Matching the head to the engine

Identify the engine by the plate on the block and the casting number on the old head. High-output variants can share the same external dimensions as lower-rated ones while differing internally. Send us both numbers and a photo of the injector seat, and our team will confirm the correct part before shipping.

Keeping the head reliable

Cooling is the dominant factor. Keep the correct coolant concentration, replace the water pump and thermostat on schedule, clean the radiator externally in dusty operations and check the aftercooler for restrictions. A head that runs hot will warp regardless of how well it was made.

Packing, freight and delivery time

A cylinder head is delicate on its deck and valve faces, so packing is part of the product. Heads are fixed to a timber skid, with the deck covered and the valve train protected, then banded so nothing moves in transit. Cartons are marked with lifting points and a this-way-up symbol.

If you are consolidating the head with a block in one container, tell us in advance so we can load the heavy items first and pack smaller parts around them. Stock sizes normally leave our warehouse in three to five working days, and sea freight to Africa, the Middle East and Latin America typically takes twenty-five to forty days depending on the port.

Related parts and categories

See the Weichai cylinder head category, and complete the top end with the WP13 cylinder liner 612700010010 or the WP13 cylinder block 612700010001.

Detailed picture

Weichai WP13 Cylinder Head 1000721713 Diesel Engine Parts
Weichai WP13 Cylinder Head 1000721713 Diesel Engine Parts
Weichai WP13 Cylinder Head 1000721713 Diesel Engine Parts
Weichai WP13 Cylinder Head 1000721713 Diesel Engine Parts

Q&A

  • Is this head supplied with valves?

    Yes, complete with valves, springs and retainers unless you request a bare head.

  • Can I use the old head bolts?

    No. They are torque-to-yield and must be replaced each time the head is removed.

  • How do I know if my engine needs 1000721713 or 612700040030?

    Check the casting number on the existing head and the engine plate. The two heads are not interchangeable.

  • What causes the injector copper washer to blow out?

    Usually an incorrect seat depth or a worn washer seat. Both are checked on every head we supply.

Why buy from EPID

EPID supplies diesel engine parts for Weichai, Baudouin, Yuchai, Caterpillar, Sinotruk, FAW Xichai and Cummins engines. Every order is checked against the original part number before packing, and our team can identify a part from a photo of the engine plate. Ask for a quotation with your model and quantity and we will reply within one working day.

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