Home / OE Number Search / Coolant thermostat / 820421 OE 820421 — Coolant thermostat Compare 23 brands — check fitment and order online
30 matching parts
About OE part number 820421 OE part number 820421 is a Coolant thermostat compatible with BMW, GENESIS and other makes. Available from 23 brands, priced from £20.99. Every cross-reference listed below matches the same OE specification used by the vehicle manufacturer.
Coolant thermostat OE 820421 prices range from £20.99 to £64.99, with 23 brands offering compatible parts.
OEM Workshop Diagram — G FUEL AND EXHAUST › 159.FUEL PUMP Original installation position for OE 820421. The red ring marks where this part installs on the vehicle.
Position 15 on Opel OMEGA-B ( 1994 - 2003) — G FUEL AND EXHAUST › 159.FUEL PUMP OEM workshop diagram — sourced from manufacturer parts catalogue.
Fits these vehicles OE 820421 is compatible with the following make/model combinations:
Make Models BMW 3 (E46), 5 (E39), 5 Touring (E39), 3 Touring (E46) +1 OPEL VECTRA C Estate (Z02), SIGNUM Hatchback (Z03), VECTRA C (Z02) VAUXHALL VECTRA Mk II (C) Estate (Z02), SIGNUM (Z03)
Available brands Choose a brand to see their compatible parts for OE 820421.
Coolant thermostat OEM 820421: Cost & Alternatives
Price range from £20.99 — £64.99
Total products 30 from 23 brands Relevance Price: Low to High Price: High to Low Brand: A-Z KAMOKA Thermostat, coolant — KAMOKA 7710116 OE 820421 MPN 7710116
85 °C · 35 Details
Opening Temperature [°C] 85 °C
Supplementary Article/Supplementary Info 35 TOPRAN Thermostat, coolant — TOPRAN 500 548 OE 820421 MPN 500 548
85 °C · 0 · 35 · 6 Details
Opening Temperature [°C] 85 °C
Housing Type 0
Supplementary Article/Supplementary Info 35
Housing material 6 3RG Thermostat, coolant — 3RG 80144 OE 820421 MPN 80144
EAN 8433889062852
85 °C Details
Opening Temperature [°C] 85 °C NRF Thermostat, coolant — NRF 725044 OE 820421 MPN 725044
EAN 8718042339300
85 °C · 0 · 396 Details
Opening Temperature [°C] 85 °C
Housing Type 0
Supplementary Article/Info 2 396 FEBI BILSTEIN Thermostat, coolant — FEBI BILSTEIN 23529 OE 820421 MPN 23529
EAN 4027816235293
85 °C · 0,260 kg · 0 · 35 Details
Opening Temperature [°C] 85 °C
Weight [kg] 0,260 kg
Housing Type 0
Supplementary Article/Supplementary Info 35 EPS Thermostat, coolant — EPS 1.880.425 OE 820421 MPN 1.880.425
EAN 8012510289563
85 °C · 35 Details
Opening Temperature [°C] 85 °C
Supplementary Article/Supplementary Info 35 TOPRAN Thermostat, coolant — TOPRAN 501 145 OE 820421 MPN 501 145
97 °C · 0 · 35 · 14 Details
Opening Temperature [°C] 97 °C
Housing Type 0
Supplementary Article/Supplementary Info 35
Supplementary Article/Info 2 14 MEAT & DORIA Thermostat, coolant — MEAT & DORIA 92348 OE 820421 MPN 92348
EAN 8033419443535
11532247019 · 85 °C Details
for OE number 11532247019
Opening Temperature [°C] 85 °C CALORSTAT by Vernet Thermostat, coolant — CALORSTAT by Vernet TH6494.85J OE 820421 MPN TH6494.85J
EAN 3531650008292
85 °C · 31,0 mm · 33,0 mm · 35 Details
Opening Temperature [°C] 85 °C
Height 1 [mm] 31,0 mm
Diameter 2 [mm] 33,0 mm
Supplementary Article/Supplementary Info 35 MAHLE Thermostat, coolant — MAHLE TI 25 85 OE 820421 MPN TI 25 85
EAN 4250192932818
85 °C · 35 · 16,2 cm · 12,20 cm Details
Opening Temperature [°C] 85 °C
Supplementary Article/Supplementary Info 35
Packaging length [cm] 16,2 cm
Packaging width [cm] 12,20 cm MEAT & DORIA Thermostat, coolant — MEAT & DORIA 92722 OE 820421 MPN 92722
EAN 8033419445881
11531436823 · 97 °C · 42,4 mm · 43 mm Details
for OE number 11531436823
Opening Temperature [°C] 97 °C
Height [mm] 42,4 mm
Diameter 2 [mm] 43 mm ABAKUS Thermostat, coolant — ABAKUS 004-025-0004 OE 820421 MPN 004-025-0004
97 °C · 2 -pin connector Details
Opening Temperature [°C] 97 °C
Number of pins 2 -pin connector DENSO Thermostat, coolant — DENSO DTM85471 OE 820421 MPN DTM85471
EAN 8717613495766
11532247019 · 85 °C · 98 · 266 g Details
for OE number 11532247019
Opening Temperature [°C] 85 °C
Supplementary Article/Supplementary Info 98
Weight [g] 266 g MAGNETI MARELLI Thermostat, coolant — MAGNETI MARELLI 352317100160 OE 820421 MPN 352317100160
EAN 8001063866895
85 °C · 35 Details
Opening Temperature [°C] 85 °C
Supplementary Article/Supplementary Info 35 HEPU Thermostat, coolant — HEPU TM1061 OE 820421 MPN TM1061
EAN 4250093421374
85 °C · 35 Details
Opening Temperature [°C] 85 °C
Supplementary Article/Supplementary Info 35 DENSO Thermostat, coolant — DENSO DTM97467 OE 820421 MPN DTM97467
EAN 8717613499566
11530139877 · 97 °C · 98 · 307 g Details
for OE number 11530139877
Opening Temperature [°C] 97 °C
Supplementary Article/Supplementary Info 98
Weight [g] 307 g ASHIKA Thermostat, coolant — ASHIKA 38-00-0104 OE 820421 MPN 38-00-0104
EAN 8052553643328
85 °C · 31,0 mm · 33,0 mm Details
Opening Temperature [°C] 85 °C
Height 1 [mm] 31,0 mm
Diameter 2 [mm] 33,0 mm SWAG Thermostat, coolant — SWAG 20 92 3529 OE 820421 MPN 20 92 3529
EAN 4044688235299
85 °C · 0,260 kg · 0 · 35 Details
Opening Temperature [°C] 85 °C
Weight [kg] 0,260 kg
Housing Type 0
Supplementary Article/Supplementary Info 35 BLUE PRINT Glow Plug — BLUE PRINT ADG01852 OE 820421 MPN ADG01852
EAN 5050063152913
5 V · 139 mm · 0,001 kg · 2 Details
Voltage [V] 5 V
Length [mm] 139 mm
Weight [kg] 0,001 kg
Glow Plug Design 2 KAMOKA Brake calliper — KAMOKA JBC0013 OE 820421 MPN JBC0013
EAN 5901779853253
Rear Left · 6 · 1 · 73 Details
Fitting Position Rear Left
Brake Caliper Type 6
Material 1
Supplementary Article/Supplementary Info 73 METZGER AUTOTEILE Brake calliper — METZGER AUTOTEILE 6260341 OE 820421 MPN 6260341
EAN 4062101051776
Rear Left · 1 · 10 · 40 mm Details
Fitting Position Rear Left
Brake Caliper Type 1
Brake Caliper Type 10
for piston diameter [mm] 40 mm BUDWEG CALIPER Brake calliper — BUDWEG CALIPER 344006 OE 820421 MPN 344006
EAN 5705444362114
Rear Bottom · Rear Left · 40 mm · 6 Details
Fitting Position Rear Bottom
Fitting Position Rear Left
Diameter [mm] 40 mm
Brake Caliper Type 6 HIDRIA Glow Plug — HIDRIA H1 453 OE 820421 MPN H1 453
EAN 3831064004904
5 V · 93 · M10x1.25 · 139 mm Details
Voltage [V] 5 V
Cone Pitch 93
Thread Size M10x1.25
Overall Length [mm] 139 mm BREMI Glow Plug — BREMI 26084 OE 820421 MPN 26084
EAN 4017534181132
4,4 V · 90 · 4 mm · 139 mm Details
Voltage [V] 4,4 V
Cone Pitch 90
Diameter [mm] 4 mm
Length [mm] 139 mm BLUE PRINT Glow Plug — BLUE PRINT ADBP180064 OE 820421 MPN ADBP180064
EAN 5057746324223
5 V · 139 mm · 0,001 kg · 2 Details
Voltage [V] 5 V
Length [mm] 139 mm
Weight [kg] 0,001 kg
Glow Plug Design 2 VALEO Glow Plug — VALEO 345211 OE 820421 MPN 345211
EAN 3276423452116
4,4 V · M4 · M10x1.25 · 139 mm Details
Voltage [V] 4,4 V
Connector type M4
Thread Size M10x1.25
Overall Length [mm] 139 mm MEYLE Glow Plug — MEYLE 37-14 860 0004 OE 820421 MPN 37-14 860 0004
EAN 4040074178553
M4 · 93 · M10 x 1,25 · 139,2 mm Details
Connector type M4
Cone Pitch 93
Thread Size M10 x 1,25
Overall Length [mm] 139,2 mm ABAKUS Brake calliper — ABAKUS 131-04-093 OE 820421 MPN 131-04-093
Rear Left · 6 · ATE · 12 mm Details
Fitting Position Rear Left
Brake Caliper Type 6
Brake System ATE
for brake disc thickness [mm] 12 mm Technical Specifications Show all specifications Attribute Value Height 1 [mm] 26 Diameter 1 [mm] 67,0 Height 1 [mm] 25,5 Housing Type 30 Quality OE EQUIVALENT Operating Mode Electric Supplementary Article/Supplementary Info 19 Housing material 1 Operating Mode pneumatic Diameter [mm] 44
Related cross-references Cross-reference numbers associated with 820421 — including both OEM part numbers and aftermarket alternatives. Each entry links to its own compatibility and pricing page.
Top OE numbers for Thermostat, coolant Common original equipment numbers linked to stocked alternatives.
Coolant thermostat by car make Find Coolant thermostat by brand Frequently Asked Questions What does OE number 820421 fit? OE 820421 fits vehicles from BMW, GENESIS, HYUNDAI and other compatible models listed below.
What part type is 820421? OE 820421 is an original equipment reference for a Coolant thermostat. It identifies the exact part specification used by the vehicle manufacturer.
How much does Coolant thermostat 820421 cost? Replacement parts for OE 820421 cost between £20.99 and £64.99, depending on brand and specification.
Which brands make Coolant thermostat 820421? ABAKUS, KAMOKA, TOPRAN, MEAT & DORIA, DENSO all offer compatible replacements for OE 820421.
Is 820421 original equipment or aftermarket? OE 820421 is an original equipment reference used by OPEL, BMW, MERCEDES-BENZ. The parts listed below are quality-matched aftermarket and OEM-equivalent replacements tested against the same specification.
What is OE number 820421? OE (Original Equipment) number 820421 is a manufacturer's reference code for Coolant thermostat used to identify the exact specification of a part fitted during vehicle production. By cross-referencing this OE number, you can find 23 compatible aftermarket brands that match the same specification — often at a lower price than the original. All parts listed above are verified to match OE 820421.
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