Listed in Triumph’s parts catalogue for these motorcycles. Fitment is Triumph’s data, not a guarantee from us — add your motorcycle above and we check it against your frame number where Triumph splits the part.

Where it sits on the bike

Engine Covers 4 Cylinder Black

Trophy · Crankcase, Engine Covers, Lubrication System · callout 8

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Crankcase & Fittings

America · Crankcase, Engine Covers, Lubrication System · callout 8

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Crankcase & Fittings up to Eng No 221608 (Plus ENG No's 229407 to 230164)

America · Crankcase, Engine Covers, Lubrication System · callout 9

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Crankcase & Fittings from Eng No 221609 (Except Eng No's 229407 to 230164)

America · Crankcase, Engine Covers, Lubrication System · callout 9

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Crankcase & Fittings

Air Cooled Scramblers · Crankcase, Engine Covers & Eng. Lubrication Syst · callout 9

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Crankcase & Fittings

Air Cooled Scramblers · Crankcase, Engine Covers & Eng. Lubrication Syst · callout 9

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Crankcase & Fittings up to Eng No 221606

Speedmaster · Crankcase, Engine Covers, Lubrication System · callout 9

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Crankcase & Fittings from Eng No 221607

Speedmaster · Crankcase, Engine Covers, Lubrication System · callout 9

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Crankcase & Fittings

Speedmaster · Crankcase, Engine Covers, Lubrication System · callout 9

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Crankcase & Fittings

Thruxton · Crankcase, Engine Covers, Lubrication System · callout 9

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Crankcase & Fittings - up to Eng No 221608 (Plus Eng No's 229407 to 230164)

Thruxton · Crankcase, Engine Covers, Lubrication System · callout 9

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Crankcase & Fittings - from Eng No 221609 (Except Eng No's 229407 to 230164)

Thruxton · Crankcase, Engine Covers, Lubrication System · callout 9

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Engine Covers

Thunderbird & Thunderbird Sport · Crankcase, Engine Covers, Lubrication System · callout 22

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Engine Covers

Thunderbird & Thunderbird Sport · Crankcase, Engine Covers, Lubrication System · callout 22

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C/case & Ftgs - Bonny Eng No 221609 > (Expt Eng No's 229407 > 230164)

Bonneville · Crankcase, Engine Covers, Lubrication System · callout 9

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Crankcase & Fittings - Bonneville from Eng No 221609 (Black Engines Only)

Bonneville · Crankcase, Engine Covers, Lubrication System · callout 9

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C/case & Fittings - Bonneville > Eng No 221608 (+ Eng No's 229407 > 230164)

Bonneville · Crankcase, Engine Covers, Lubrication System · callout 9

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Crankcase & Fittings

Bonneville · Crankcase, Engine Covers, Lubrication System · callout 9

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Crankcase & Fittings

Bonneville · Crankcase, Engine Covers, Lubrication System · callout 9

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C/Case & Ftgs - Bonny T100 Eng No 221609 > (Expt Eng No's 229407 > 230164)

Bonneville · Crankcase, Engine Covers, Lubrication System · callout 9

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C/case & Fittings - Bonny T100 > Eng No 221608 (+ Eng No's 229407 > 230164)

Bonneville · Crankcase, Engine Covers, Lubrication System · callout 9

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Crankcase & Fittings

Bonneville · Crankcase, Engine Covers, Lubrication System · callout 9

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Crankcase & Fittings - Bonneville up to Eng No 221608 (Black Engines Only)

Bonneville · Crankcase, Engine Covers, Lubrication System · callout 9

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Prices and availability are a dated snapshot, not a reservation — Triumph supply is read from Triumph’s catalogue and our shelf count is read from our own system. Both move. Triumph supply checked Aug 5, 2026 · Brea shelf Aug 18, 2026. Shipping and tax are calculated at checkout.

Genuine Triumph parts from Southern California Motorcycles, 515 W Lambert Rd, Brea, CA 92821 · 714-256-6700