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Gasket Kit, Cylinder Head

Triumph Street Twin & Speed Twin 900 · Service Tools, Literature & Touch-Up Paint · 16 parts · 11 on the shelf in Brea

Exploded parts diagram — Gasket Kit, Cylinder Head, Triumph Street Twin & Speed Twin 900

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

Motorcycles this catalogue covers

Speed Twin 900
2021–2025
Street Twin
2016–2022

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

Every part on this diagram

1
T3990232
Gasket Kit, Head
Qty 1
COMPRISES FOLLOWING PARTS:
Triumph’s Aug 21, 2026 date has passed, we’ll confirm
$483.68
On backorder Ask the parts desk
—
T1156442
Gasket, Cylinder Head, 84.6
Qty 1
Cylinder Head Section
No date from Triumph yet
$91.22
On backorder Ask the parts desk
—
T1130710
Oil Seal, Valve Stem, 5mm
Qty 8
Cylinder Head Section
$9.87
In stock in Brea Ask the parts desk
—
T3601276
O Ring, ID 23.7 x 2.9
Qty 1
Camshaft/Cam Drive Section
$2.76
In stock in Brea Ask the parts desk
—
T3600199
O Ring, 18.8 x Dia 1.9
Qty 1
Camshaft/Cam Drive Section
$1.36
In stock in Brea Ask the parts desk
—
T1167250
Base Gasket
Qty 1
Crankcase Section
Triumph’s Sep 4, 2026 date has passed, we’ll confirm
$27.37
On backorder Ask the parts desk
—
T1260309
Seal, Cam Cover, Screw, Twin Lip
Qty 4
Cam Cover Section
$5.39
In stock in Brea Ask the parts desk
—
T1260587
Seal, Cam Cover, SAI
Qty 1
Cam Cover Section
$27.60
In stock in Brea Ask the parts desk
—
T1268765
Gasket, Alternator Cover
Qty 1
Engine Covers Section
$12.71
In stock in Brea Ask the parts desk
—
T3558989
Washer, Sealing, 14.4 x 23 x 3
Qty 1
Sump Section - Part only available as multipack, T3551092
$1.86
In stock in Brea Ask the parts desk
—
T1241996
Intake Seal
Qty 3
Throttle Body Section
$6.42
In stock in Brea Ask the parts desk
—
T1241966
O Ring, Injector, Lower
Qty 2
Throttle Body Section
Triumph has stock
$5.02
Order-in Ask the parts desk
—
T2201429
Gasket, Exhaust Header
Qty 2
Exhaust Section
$14.75
In stock in Brea Ask the parts desk
—
T2202346
Gasket, Exhaust
Qty 4
Exhaust Section
$12.71
In stock in Brea Ask the parts desk
—
T2100201
Seal, Thermostat
Qty 1
Cooling Section
$6.61
In stock in Brea Ask the parts desk
—
T3550571
Washer, Cu, OD 16 x ID 12.5
Qty 1
Ignition Section
Low stock at Triumph
$4.70
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.