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Alternator & Starter Motor

Triumph Bonneville Speedmaster · Electrical System · 14 parts · 1 on the shelf in Brea

Exploded parts diagram — Alternator & Starter Motor, Triumph Bonneville Speedmaster

Open this diagram in the interactive viewer → Click any callout on the drawing to jump to the part.

Triumph lists this drawing for the Bonneville Speedmaster, VIN AC1200 and lower. Triumph builds more than one machine in this book and they do not all take the same parts. Tell us which one you ride →

Motorcycles this catalogue covers

Speedmaster 1200
2020–2026

Our parts team checks fitment against your motorcycle before any order ships.

Every part on this diagram

1
T1308003
Rotor, Alternator, High Inertia
Qty 1
$915.37
Available
2
T1300128
Stator, Alternator
Qty 1
$617.00
Available
3
T3208888
Bolt, Radial Feed, M12 x 40
Qty 1
$13.39
Available
4
T3550846
Washer, M12 x 30 x 8
Qty 1
$10.22
Available
5
T1300895
Key, Woodruff
Qty 1
Backordered at Triumph · we’ll confirm the ship date after you order
$7.19
On backorder Order through the parts desk
6
T3330728
Screw, Pan/Hd, Tx, M5 x 16, Enc
Qty 2
$1.99
Available
7
T3051082
Screw, Cap/Hd, M6 x 50, Enc
Qty 3
$2.01
Available
8
T1300679
Regulator Rectifier
Qty 1
$412.16
Available
9
T3200190
Bolt, RHHF, M6 x 25, Slv
Qty 2
$2.43
Available
10
T1313222
Starter Motor, 1KW
Qty 1
$1153.04
Available
11
T3600115
O Ring
Qty 1
$3.14
Available
12
T3350003
Locknut, Flanged, M6 x 1
Qty 1
$1.99
Available
13
T3205070
Bolt, HHF, Lghtd, M6 x 30, Slv
Qty 2
$2.20
Available
14
T3552004
Washer, M6 x 14 x 2
Qty 2
$1.99
In stock in Brea

Diagram and part data from Triumph’s own parts catalogue. Prices and availability are a dated snapshot, not a reservation. Fitment is Triumph’s data — send us the last six of your VIN if you want it checked before you order.

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

Triumph supply checked Oct 15, 2026.