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halogen lamp light bulb
12356-12V PHILIPS
donsbulbs part:
H21W-21W-12V-BAY9S DONSBULBS
H/12V/21W/BAY9S/T2.75/CL/200H
approximately 8 bulbs in stock
enter quantity:   
quantity discount:
bulb quantity:  1+    4+    8+  
price per bulb:  $25    $23.75    $22.56  

H21W-21W-12V-BAY9S DONSBULBS
H/12V/21W/BAY9S/T2.75/CL/200H

bulb specifications:
  
category: Halogen lamp
volt: 12
amp: 1.75
watt: 21
base: BAY9s
glass: T2-3/4
filament: C2R
fil.res.: 6.86 ohm
d.hours: 200
notes: clear glass
halogen gas
miniature bulb
style:h21w


typical photo of H21W-21W-12V-BAY9S DONSBULBS
H/12V/21W/BAY9S/T2.75/CL/200H bulb type
(your bulb may look slightly different)


typical shape of T2-3/4 glass envelopes
(not to scale)


typical shape of C2R filament
(not to scale)


industry standards for base:
BAY9s
(not to scale)


Don's grand wisdom: When multiple bulbs are in a circuit; if one bulb burns out, you really should replace all bulbs at same time. This way all bulbs will look the same. Otherwise, mixing "used" bulbs with "new" bulbs (or mixing brands) will each look different (some will be dimmer, some a different shade of color.) For example, automobile headlights and tail-lights must always be replaced in pairs or they will look odd. And, when one bulb is at it's end of life, the other will be near it's end of life too. Keep good working "used" bulbs as emergency spares.

Although few specialty light bulbs and sockets are manufactured anymore, I have decent inventories of most types in stock, plus additional sources for nearly everything. All are guaranteed brand new, most being NOS (new old stock). Shelf life is forever.

Prices usually rise as inventory is sold off. Website updated daily to reflect current stock and prices. Click add to cart button above, and order at today's prices.

I don't guarantee brand (or country) of manufacture, but you are welcome to suggest a preference. If you do require a certain brand or specific country of manufacture; read my general information.

I need your help! I'm doing everything possible to provide free accurate bulb data and cross-referencing. If you have additional information or found errors, click here.

Thanks to you;  donsbulbs is the world's largest resource of bulb data and cross-referencing.

Thank you, Don Schnapp


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Definition of light bulb refers to lamp.
Definition of socket refers to lampholder (lamp holder).


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a related bulb search:

H / 12V / 21W / BAY9S / T2.75 / CL / 200H H21W-21W-12V-BAY9S DONSBULBS (this bulb)
H / 12V / 21W / BAY9S / T2.75 / CL / 400H H21WLL-21W-12V-BAY9S DONSBULBS

H21W-21W-12V-BAY9S DONSBULBS
H/12V/21W/BAY9S/T2.75/CL/200H

also known as
Cross-Reference:


1-987-302-250-H21W-12-V-21-W-BAY9S-40-3-165143-498729 BOSCH
1-987-302-250-H21W-12V-21W-BAY9S-40-3-165143-498729 BOSCH
1-987-302-250 BOSCH
3-165143-498729-EAN BOSCH
6021-12V-21W-BAY9S-H21W FLOSSER
6021-H21W-12V-21W-BAY9S FLOSSER
6021-H21W-21W FLOSSER
6021 FLOSSER
6021 USA
12356-12V PHILIPS
12356-FLOSSER HELLA-MARINE
12356-P PHILIPS
12356 HELLA-MARINE
12356 PHILIPS
64136-FLOSSER HELLA-MARINE
64136/12V/21W/BAY9S OSRAM
64136/13.5V/1.55A CEC
64136/13.5V/1.55A USA
64136/21W/12V/BAY9S/LF OSRAM
64136/21W/12V/BAY9S OSRAM
64136/21W12V/BAY9S/LF OSRAM
64136/21W12V/BAY9S OSRAM
64136/H21W/12V/21W/BAY9S OSRAM
64136 CEC
64136 HELLA-MARINE
64136 OSRAM
64136 USA
64136H21W12V21W/BAY9S OSRAM
68191-CP NARVA
68191/12V/21W CANDLEPOWER-INCORPORATED
68191/12V/21W NARVA
68191 CANDLEPOWER-INCORPORATED
68191 NARVA
834825 OSRAM
883335 OSRAM
1987302250-H21W-12-V-21-W-BAY9S-40-3165143498729 BOSCH
1987302250-H21W-12V-21W-BAY9S-40-3165143498729 BOSCH
1987302250 BOSCH
923045917120 PHILIPS
3165143498729-EAN BOSCH
4008321095190 OSRAM
4050300834825 OSRAM
4050300883335 OSRAM
FLO6021-H21W-21W VERMEER-AUTO-PARTS
FLO6021 VERMEER-AUTO-PARTS
H/12V/21W/BAY9S/T2.75/33MMMOL/15MMLCL/C6/LLB436 LUCAS
H/12V/21W/BAY9S/T2.75/200H
H/12V/21W/BAY9S/T2.75/200H/H21W-12V DONSBULBS
H/12V/21W/BAY9S/T2.75/200H/H21W DONSBULBS
H/12V/21W/BAY9S/T2.75/200H/H21W ECE
H/12V/21W/BAY9S/T2.75/CL/33MMMOL/15MMLCL/C6/LLB436 LUCAS
H/12V/21W/BAY9S/T2.75/CL/200H/H21W-12V DONSBULBS
H/12V/21W/BAY9S/T2.75/CL/200H/H21W-21W-12V-BAY9S DONSBULBS
H/12V/21W/BAY9S/T2.75/CL/200H/H21W-21W-12V-BAY9S ECE
H/12V/21W/BAY9S/T2.75/CL/200H H21W-21W-12V-BAY9S DONSBULBS
H21W
H21W-12-V-21-W-BAY9S-1-987-302-250 BOSCH
H21W-12-V-21-W-BAY9S-40-3-165143-498729-1-987-302-250 BOSCH
H21W-12-V-21-W-BAY9S-40-3-1651434987291987302250 BOSCH
H21W-12-V-21-W-BAY9S-1987302250 BOSCH
H21W-12V-21W-BAY9S-1-987-302-250 BOSCH
H21W-12V-21W-BAY9S-40-3-165143-498729-1-987-302-250 BOSCH
H21W-12V-21W-BAY9S-40-3-1651434987291987302250 BOSCH
H21W-12V-21W-BAY9S-1987302250 BOSCH
H21W-12V-21W-BAY9S DONSBULBS
H21W-12V-21W-BAY9S ECE
H21W-12V-21W-BAY9S FLOSSER
H21W-12V-21W-BAY9S NARVA
H21W-12V-21W-BAY9S PHILIPS
H21W-12V/21W/BAY9S ECE
H21W-12V DONSBULBS
H21W-12VOLT-21WATT-BAY9S ECE
H21W-21W-12V-BAY9S DONSBULBS
H21W-21W-12V-BAY9S ECE
H21W-21W USA
H21W/12V/21W/BAY9S/T9MM/33MMMOL/15MMLCL/C6 LUCAS
H21W/12V/21W/BAY9S ECE
H21W/12V/21W/BAY9S LUCAS
H21W/12V/21W/BAY9S OSRAM
H21W/12V LUCAS
H21W/12VOLT/21W/BAY9S
H21W/12VOLT/21WATT/BAY9S ECE
H21W12V21W-BAY9S ECE
LLB-436 LUCAS
LLB436-ECE-H21W/12V/21W/BAY9S/T9MM/33MMMOL/15MMLCL/C6 LUCAS
Know a cross-reference for this bulb
to add to this list?


Please enter:
bulb number
brand of bulb
LLB436-ECE-H21W/12V/21W/BAY9S LUCAS
LLB436-ECE-H21W LUCAS
LLB436/12V/21W/BAY9S/T9MM/33MMMOL/15MMLCL/C6 LUCAS
LLB436 LUCAS

H21W-21W-12V-BAY9S DONSBULBS
H/12V/21W/BAY9S/T2.75/CL/200H

have been found in equipment:

>> no equipment cross-references entered yet <<
Know any equipment using this bulb to add to this list?
Enter as much information as possible: example:
manufacture name:  Bell & Howell
model number #:  1480
model name:  Multi-Motion
size:  8mm
type of equipment:  projector
notes:  only the green one
comments:  any comments