BMW 3 E21 Coolant tank cap

Compare BMW 3 E21 coolant tank cap from trusted brands — check fitment by engine

3 parts available for BMW 3 E21

Coolant tank cap for BMW 3 E21 by engine

315 (1.6 L / 55 kW / 75 hp) M10 B16 (164VB)

316 (1.6 L / 66 kW / 90 hp) M10 B16 (164VA)

316 (1.8 L / 66 kW / 90 hp) M10 B18 (184VC)

318 (1.8 L / 72 kW / 98 hp) M10 B18 (184VA)

318 i (1.8 L / 77 kW / 105 hp) M10 B18 (184VA)

320 (2.0 L / 80 kW / 109 hp) M10 B20

320/6 (2.0 L / 90 kW / 122 hp) M20 B20 (206VA)

320 i (2.0 L / 92 kW / 125 hp) M10 B20

323 i (2.3 L / 105 kW / 143 hp) M20 B23 (236EA)

Special offers for BMW 3 E21 Coolant tank cap and other engine cooling system spares

Radiator Hose Radiator Engine cooling water pump Coolant thermostat Engine cooling fan Coolant expansion tank Coolant Flange Coolant Pipe

Hot Picks: our best-selling BMW 3 E21 Coolant tank cap

Popular Coolant tank cap parts at great prices.

GATESRC265RC265£6.99

HERTH+BUSS JAKOPARTSJ1540902J1540902£12.99

METZGER AUTOTEILE2140050GREENPARTS£7.99

FEBI BILSTEIN0226902269£6.99

Top Coolant tank cap brands for BMW 3 E21

TRICLO3

Related models for this part

1 Convertible E88 1 Coupe E82 1 E81 1 E87 1 F20 1 F21 1 F40 1 VAN F20

Top OE numbers for Cap, coolant tank

Common original equipment numbers linked to stocked alternatives.

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TRICLOTRICLO 311332 Coolant tank cap

MPN 3113324970

£10.64In stock

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TRICLOTRICLO 318070 Coolant tank cap

MPN 3180704970

£10.78In stock

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TRICLOTRICLO 310176 Coolant tank cap

MPN 3101764970

£11.82In stock

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Coolant tank cap for BMW 3 E21 — what you need to know

Finding the right coolant tank cap for your BMW 3 E21 is essential for safe and reliable driving. We stock 3+ options from 1+ trusted brands, all with TecDoc-verified fitment for your specific vehicle.

When choosing coolant tank cap for your BMW 3 E21, consider factors like OEM vs aftermarket quality, material specifications, and your driving conditions. OEM parts match original specifications exactly, while premium aftermarket brands like Bosch, TRW, and Febi Bilstein often offer comparable quality at lower prices.

All coolant tank cap listed on this page are confirmed compatible with BMW 3 E21. Our fitment data is sourced from TecDoc, the industry-standard European automotive parts database. If you are unsure about compatibility, check the OE part number on your existing component and use our cross-reference search.

Frequently Asked Questions

What coolant tank cap fits a BMW 3 E21?

We have 3+ coolant tank cap options verified for BMW 3 E21. Select your exact engine above to confirm fitment. All compatibility data is verified through TecDoc.

How many coolant tank cap options are available for BMW 3 E21?

There are 3 coolant tank cap options available for the BMW 3 E21, from brands including TRICLO. Prices range from £10.64 to £11.82.

What brands make coolant tank cap for BMW 3 E21?

Available brands include TRICLO. All parts are new, with TecDoc-verified fitment and our 14-day guarantee.

How do I find the OE part number for BMW 3 E21 coolant tank cap?

Check your BMW 3 E21 owner's manual or service book for the original part number. You can also use our OE number search to find compatible aftermarket alternatives. The part number is often printed on the existing component.