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Crankcase & Fittings

Triumph Bonneville · Crankcase, Engine Covers, Lubrication System · 31 parts

Exploded parts diagram — Crankcase & Fittings, Triumph Bonneville

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

Motorcycles this catalogue covers

Bonneville T100

Bonneville T120

Bonneville T120 Black

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

Every part on this diagram

1

Crankcase Assembly, Spares

Qty 1

Triumph’s Aug 14, 2026 date has passed, we’ll confirm

$404.98

On backorder Ask the parts desk

2

Plug, PTF-SAE Short, 3/8-18, Enc

Qty 6

Triumph has stock

$6.16

Order-in Ask the parts desk

3

Plug, M10, Flanged

Qty 3

Triumph has stock

$1.40

Order-in Ask the parts desk

4

Elbow, Coolant, Return

Qty 1

Triumph has stock

$59.74

Order-in Ask the parts desk

5

Spigot, OD 14.0mm

Qty 1

Triumph has stock

$5.35

Order-in Ask the parts desk

6

Dowel, Hollow, 10 x 14

Qty 3

Low stock at Triumph

$1.66

Order-in Ask the parts desk

7

Main Bearing Shell, Grooved, Red

Qty -1

Triumph has stock

$14.71

Order-in Ask the parts desk

7

Main Bearing Shell, Grooved, Blue

Qty -1

Triumph has stock

$14.71

Order-in Ask the parts desk

7

Main Bearing Shell, Grooved, Green

Qty -1

Triumph has stock

$14.71

Order-in Ask the parts desk

8

Dowel, Hollow, 8 x 14

Qty 5

Triumph has stock

$3.61

Order-in Ask the parts desk

9

Barrel, Dia 97.6

Qty 1

Triumph has stock

$236.84

Order-in Ask the parts desk

10

Qty 1

Triumph’s Sep 4, 2026 date has passed, we’ll confirm

$27.37

On backorder Ask the parts desk

11

Qty 1

Triumph has stock

$16.00

Order-in Ask the parts desk

12

Plug, Sightglass

Qty 1

Triumph has stock

$6.87

Order-in Ask the parts desk

13

Cap, Oil Filler

Qty 1

Triumph has stock

$17.71

Order-in Ask the parts desk

14

O Ring, Filler Cap

Qty 1

Triumph has stock

$1.30

Order-in Ask the parts desk

15

Qty 1

Triumph has stock

$39.02

Order-in Ask the parts desk

16

Gasket, Breather

Qty 1

Low stock at Triumph

$4.21

Order-in Ask the parts desk

17

Bolt, HHF, Lghtd, M6 x 20, Enc

Qty 8

Triumph’s Aug 7, 2026 date has passed, we’ll confirm

$5.27

On backorder Ask the parts desk

18

Baffle Plate, Perforated

Qty 1

Triumph has stock

$5.45

Order-in Ask the parts desk

19

O Ring, 7.6 x 2.4

Qty 2

Triumph has stock

$1.86

Order-in Ask the parts desk

20

Breather Drain Pipe

Qty 1

Triumph has stock

$22.35

Order-in Ask the parts desk

21

Breather Drain Pipe, Lower

Qty 1

Triumph has stock

$11.26

Order-in Ask the parts desk

22

Screw, Cap/Hd, M6 x 16, Enc, Raw

Qty 1

Triumph has stock

$0.53

Order-in Ask the parts desk

23

Washer, CU, OD16.0, ID8.4, 1.0

Qty 1

Triumph has stock

$2.20

Order-in Ask the parts desk

24

Screw, Cap/Hd, M8 x 16, Slv

Qty 1

Triumph has stock

$3.08

Order-in Ask the parts desk

25

Firtree, 5 x 11mm, Blk

Qty 3

Low stock at Triumph

$1.30

Order-in Ask the parts desk

26

O Ring, 23.47 x 2.62

Qty 1

No date from Triumph yet

$3.00

On backorder Ask the parts desk

27

Bolt, RHHF, M6 x 30

Qty 1

Triumph has stock

$4.12

Order-in Ask the parts desk

28

O Ring, ID 7, 52 x 3, 53

Qty 1

Triumph has stock

$5.02

Order-in Ask the parts desk

29

Badge, 1200, Black

Qty 2

Triumph has stock

$64.23

Order-in Ask the parts desk

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 Aug 5, 2026 · Brea shelf Aug 18, 2026.