Volvo Penta MD21B Parts

We sell replacement and genuine Volvo Penta MD21B engine parts and spares for engines manufactured between the years of 1979 - 1981. Our extensive range of MD21B parts includes Engine, Lubricants, Cooling System, Fuel System (Engine), Optional Fuel System Components, Electrical System, Repair Kits, Zinc Shaft Clamp Anodes - Seawater Use, Chemicals, Tools & Manuals

For more information you can contact us through sales@keypart.com. Call us now on +44(0)1923 276000 and one of our team will be able to help with all queries about MD21B Diesel Engine

Engine

75hp@4500rpm
Oil Filter - Genuine
Model: 21549542
Oil Filter - Genuine
  In stock
£33.16 inc VAT £27.63 ex VAT
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Rocker Cover Gasket - D21 - Replacement
Model: 829285-R
Rocker Cover Gasket - D21 - Replacement
  In stock
£33.42 inc VAT £27.85 ex VAT
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Cylinder Head Gasket - D21 - Replacement
Model: 859152-R
Cylinder Head Gasket - D21 - Replacement
  Special order item – expected 2-4 days
£170.40 inc VAT £142.00 ex VAT
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Exhaust Manifold to Head Gasket - Genuine
Model: 859114
Exhaust Manifold to Head Gasket - Genuine
  In stock
£16.85 inc VAT £14.04 ex VAT
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Exhaust Manifold to Head Gasket - Genuine
Model: 859144
Exhaust Manifold to Head Gasket - Genuine
  In stock
£13.61 inc VAT £11.34 ex VAT
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Lubricants

Engine oil capacity is approximately 5.5 Litres
VDS-3 15W/40 Volvo Engine Oil 1-Litre - Genuine
Model: 23909459
VDS-3 15W/40 Volvo Engine Oil 1-Litre - Genuine
  In stock
£13.50 inc VAT £11.25 ex VAT
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Oil Change Pump Kit (Universal)
Model: 33799-0000
Oil Change Pump Kit (Universal)
  In stock
£87.38 inc VAT £72.82 ex VAT
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VDS-4.5 15W/40 Volvo Engine Oil 5-Litre - Genuine
Model: 23909460
VDS-4.5 15W/40 Volvo Engine Oil 5-Litre - Genuine
  In stock
£50.40 inc VAT £42.00 ex VAT
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VDS- 4.5 15W/40 E7 Engine Oil - 5 Litre
Model: 1200-005
VDS- 4.5 15W/40 E7 Engine Oil - 5 Litre
  In stock
£34.80 inc VAT £29.00 ex VAT
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VDS-4.5 15W/40 Volvo Engine Oil 20-Litre - Genuine
Model: 23909461
VDS-4.5 15W/40 Volvo Engine Oil 20-Litre - Genuine
  In stock
£144.00 inc VAT £120.00 ex VAT
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VDS-4.5 15W/40 E9 LOW SAPS ENGINE OIL - 20 litre
Model: 1225-020
VDS-4.5 15W/40 E9 LOW SAPS ENGINE OIL - 20 litre
  In stock
£114.00 inc VAT £95.00 ex VAT
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VDS-3 15W/40 E7 Engine Oil - 20 Litre
Model: 1200-020
VDS-3 15W/40 E7 Engine Oil - 20 Litre
  In stock
£103.20 inc VAT £86.00 ex VAT
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VCS Yellow Coolant/Anti-freeze Concentrate 5L - Genuine
Model: 22567295
VCS Yellow Coolant/Anti-freeze Concentrate 5L - Genuine
  In stock
£58.00 inc VAT £48.33 ex VAT
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Ultra longlife Coolant - Yellow Concentrate
Model: 1650-020
Ultra longlife Coolant - Yellow Concentrate
  In stock
£110.40 inc VAT £92.00 ex VAT
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Cooling System

Drain Tap - Replacement
Model: 82744-R
Drain Tap - Replacement
  In stock
£11.99 inc VAT £9.99 ex VAT
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Zinc Pencil Anode - Replacement
Model: 838929-R
Zinc Pencil Anode - Replacement
  In stock
£8.57 inc VAT £7.14 ex VAT
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Magnesium Pencil Anode (Fresh water use)
Model: 838929M
Magnesium Pencil Anode (Fresh water use)
  In stock
£10.08 inc VAT £8.40 ex VAT
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Brass Holder for Zinc Pencil Anode - for 838929
Model: 838928-R
Brass Holder for Zinc Pencil Anode - for 838929
  In stock
£15.07 inc VAT £12.56 ex VAT
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Thermostat Kit - 71 deg D19,21,27,29,32 - Replacement
Model: 875785-R
Thermostat Kit - 71 deg D19,21,27,29,32 - Replacement
  In stock
£39.73 inc VAT £33.11 ex VAT
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Seawater Pump Drive Coupling - B21,B23,B25,B30,D21 - Replacement
Model: 831009-R
Seawater Pump Drive Coupling - B21,B23,B25,B30,D21 - Replacement
  In stock
£10.66 inc VAT £8.88 ex VAT
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O-Ring - Replacement
Model: 925066-R
O-Ring - Replacement
  Special order item – expected 2-4 days
£3.48 inc VAT £2.90 ex VAT
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Impeller Kit - Replacement
Model: 875575-R
Impeller Kit - Replacement
  In stock
£47.46 inc VAT £39.55 ex VAT
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Impeller Kit - Genuine
Model: 21951350
Impeller Kit - Genuine
  Special order item – expected 2-4 days
£61.02 inc VAT £50.85 ex VAT
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Seawater Pump Cover Screw - Replacement
Model: 817825-R
Seawater Pump Cover Screw - Replacement
  Special order item – expected 2-4 days
£2.52 inc VAT £2.10 ex VAT
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Exhaust Elbow to Manifold Gasket - Replacement
Model: 859140-R
Exhaust Elbow to Manifold Gasket - Replacement
  In stock
£13.50 inc VAT £11.25 ex VAT
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Seawater Pump Assembly - B30 & LATE D21
Model: 831178
Seawater Pump Assembly - B30 & LATE D21
  Special order item – expected 2-4 days
£695.52 inc VAT £579.60 ex VAT
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Seawater Filter Strainer Basket - Genuine
Model: 21880390
Seawater Filter Strainer Basket - Genuine
  In stock
£31.32 inc VAT £26.10 ex VAT
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Seal Ring for Strainer
Model: 842724
Seal Ring for Strainer
  In stock
£30.46 inc VAT £25.38 ex VAT
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Circulation Pump Assembly - D21 - Replacement
Model: 826870-R
Circulation Pump Assembly - D21 - Replacement
  In stock
£900.00 inc VAT £750.00 ex VAT
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Fuel System (Engine)

Fuel Filter for CAV/Delphi 296 Pre-filter (Optional) - Replacement
Model: 3581078-R
Fuel Filter for CAV/Delphi 296 Pre-filter (Optional) - Replacement
  In stock
£8.74 inc VAT £7.28 ex VAT
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Fuel Filter for CAV/Delphi 296 Pre-filter - Genuine
Model: 3581078
Fuel Filter for CAV/Delphi 296 Pre-filter - Genuine
  In stock
£9.72 inc VAT £8.10 ex VAT
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Washer - Vent Screw - Genuine
Model: 25534
Washer - Vent Screw - Genuine
  In stock
£0.48 inc VAT £0.40 ex VAT
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Washer - Fuel Lines (OD 15.8mm/ID 12.2mm/Thickness 1.15mm)
Model: 48588-R
Washer - Fuel Lines (OD 15.8mm/ID 12.2mm/Thickness 1.15mm)
  In stock
£0.91 inc VAT £0.76 ex VAT
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Washer - Fuel Lines (OD 17.8mm/ID 13.6mm/ Thickness 1.55mm)
Model: 957177-R
Washer - Fuel Lines (OD 17.8mm/ID 13.6mm/ Thickness 1.55mm)
  In stock
£0.47 inc VAT £0.39 ex VAT
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Fuel Lift Pump Assembly (No repair kits available for early Pumps) D21/32
Model: 858459-R
Fuel Lift Pump Assembly (No repair kits available for early Pumps) D21/32
  In stock
£264.60 inc VAT £220.50 ex VAT
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14V/60A Alternator Assembly - Replacement
Model: 873770-R
14V/60A Alternator Assembly - Replacement
  In stock
£332.28 inc VAT £276.90 ex VAT
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Optional Fuel System Components

For additional types of Fuel Filters & Elements, please visit the Racor & Separ sections of our Website. These can be found under the "Accessories" heading on our Home Page.
Fuel Filter for CAV/Delphi 296 Pre-filter (Optional) - Replacement
Model: 3581078-R
Fuel Filter for CAV/Delphi 296 Pre-filter (Optional) - Replacement
  In stock
£8.74 inc VAT £7.28 ex VAT
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Fuel Filter for CAV/Delphi 296 Pre-filter - Genuine
Model: 3581078
Fuel Filter for CAV/Delphi 296 Pre-filter - Genuine
  In stock
£9.72 inc VAT £8.10 ex VAT
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Electrical System

12V/2W Panel Light Bulb - White Bayonet Type - Genuine
Model: 19923
12V/2W Panel Light Bulb - White Bayonet Type - Genuine
  In stock
£2.05 inc VAT £1.71 ex VAT
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Fuse Block - Genuine
Model: 873566
Fuse Block - Genuine
  In stock
£68.15 inc VAT £56.79 ex VAT
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Glow Plug Resistance - Genuine - D21
Model: 829637
Glow Plug Resistance - Genuine - D21
  In stock
£92.99 inc VAT £77.49 ex VAT
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Oil Pressure Switch - Replacement
Model: 1324750-R
Oil Pressure Switch - Replacement
  In stock
£20.52 inc VAT £17.10 ex VAT
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Temperature Sender for Gauge - 1 spade
Model: 827151
Temperature Sender for Gauge - 1 spade
  Special order item – expected 2-4 days
£68.47 inc VAT £57.06 ex VAT
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Drive Belt - 10 x 1165mm - Replacement
Model: 966920-R
Drive Belt - 10 x 1165mm - Replacement
  In stock
£16.80 inc VAT £14.00 ex VAT
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14V/60A Alternator Assembly - Replacement
Model: 873770-R
14V/60A Alternator Assembly - Replacement
  In stock
£332.28 inc VAT £276.90 ex VAT
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Alternator Pulley (Required when upgrading to 14V/60A) - Genuine
Model: 841811
Alternator Pulley (Required when upgrading to 14V/60A) - Genuine
  In stock
£94.28 inc VAT £78.57 ex VAT
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Repair Kits

De-Coke Gasket Kit - D21 - Replacement
Model: 876417-R
De-Coke Gasket Kit - D21 - Replacement
  In stock
£342.00 inc VAT £285.00 ex VAT
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Seawater Pump Repair Kit - B30 & D21 - Replacement
Model: 875383-R
Seawater Pump Repair Kit - B30 & D21 - Replacement
  In stock
£140.00 inc VAT £116.67 ex VAT
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Seawater Pump Seal Kit - AQ165, AQ170, MD21
Model: 36-2
Seawater Pump Seal Kit - AQ165, AQ170, MD21
  In stock
£10.27 inc VAT £8.56 ex VAT
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22070 Oil Cooler Seal Kit - B20,B21,B23,B25,B30,D21
Model: 36-6
22070 Oil Cooler Seal Kit - B20,B21,B23,B25,B30,D21
  In stock
£4.15 inc VAT £3.46 ex VAT
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22046 Seal Kit for CAV/Delphi 296 Pre-filter
Model: 36-17
22046 Seal Kit for CAV/Delphi 296 Pre-filter
  In stock
£6.48 inc VAT £5.40 ex VAT
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Rubber Element for Volvo Flexible Coupling (4 or 6 required)
Model: 803762-R
Rubber Element for Volvo Flexible Coupling (4 or 6 required)
  In stock
£42.82 inc VAT £35.68 ex VAT
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Zinc Shaft Clamp Anodes - Seawater Use

3/4″ Zinc Shaft Anode
Model: 800500ZN
3/4" Zinc Shaft Anode
  In stock
£18.00 inc VAT £15.00 ex VAT
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25mm Zinc Shaft Anode
Model: 800502ZN
25mm Zinc Shaft Anode
  In stock
£15.60 inc VAT £13.00 ex VAT
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1″ Zinc Shaft Anode
Model: 800503ZN
1" Zinc Shaft Anode
  In stock
£14.40 inc VAT £12.00 ex VAT
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30mm Zinc Shaft Anode
Model: 800506ZN
30mm Zinc Shaft Anode
  In stock
£15.60 inc VAT £13.00 ex VAT
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1-1/4″ Zinc Shaft Anode
Model: 800507ZN
1-1/4" Zinc Shaft Anode
  In stock
£15.60 inc VAT £13.00 ex VAT
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35mm Zinc Shaft Anode
Model: 800509ZN
35mm Zinc Shaft Anode
  Special order item – expected 2-4 days
£18.00 inc VAT £15.00 ex VAT
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1-1/2″ Zinc Shaft Anode
Model: 800510ZN
1-1/2" Zinc Shaft Anode
  In stock
£18.00 inc VAT £15.00 ex VAT
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40mm Zinc Shaft Anode
Model: 800511ZN
40mm Zinc Shaft Anode
  In stock
£30.00 inc VAT £25.00 ex VAT
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45mm Zinc Shaft Anode
Model: 800512ZN
45mm Zinc Shaft Anode
  In stock
£30.00 inc VAT £25.00 ex VAT
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50mm Zinc Shaft Anode
Model: 800513ZN
50mm Zinc Shaft Anode
  In stock
£36.00 inc VAT £30.00 ex VAT
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2″ Zinc Shaft Anode
Model: 800514ZN
2" Zinc Shaft Anode
  In stock
£36.00 inc VAT £30.00 ex VAT
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Chemicals

Please note: It is NOT possible to ship most liquids by air. Aerosols can ONLY be purchased by customers in England, Scotland and Wales.
Green Aerosol Paint - 400 ml - Replacement
Model: 1141566-R
Green Aerosol Paint - 400 ml - Replacement
  In stock
£24.11 inc VAT £20.09 ex VAT
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Loctite Threadlock 10ml
Model: LOCTITE-243-10ML
Loctite Threadlock 10ml
  In stock
£17.40 inc VAT £14.50 ex VAT
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Loctite Threadlock 50ml
Model: LOCTITE-243-50ML
Loctite Threadlock 50ml
  In stock
£60.00 inc VAT £50.00 ex VAT
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SA-90 Industrial Strength Adhesive - Aerosol 500ml
Model: ACT1847
SA-90 Industrial Strength Adhesive - Aerosol 500ml
  In stock
£14.40 inc VAT £12.00 ex VAT
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AC-90 Moisture Displacement & Lubricant - Aerosol - 500ml
Model: ACT1839
AC-90 Moisture Displacement & Lubricant - Aerosol - 500ml
  In stock
£10.79 inc VAT £8.99 ex VAT
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TF-90 Fast Dry Cleaning Solvent + Degreaser (500ml Aerosol)
Model: ACT1848
TF-90 Fast Dry Cleaning Solvent + Degreaser (500ml Aerosol)
  In stock
£10.54 inc VAT £8.78 ex VAT
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Tools & Manuals

Oil Change Pump Kit (Universal)
Model: 33799-0000
Oil Change Pump Kit (Universal)
  In stock
£87.38 inc VAT £72.82 ex VAT
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MD21B Diesel Engine