Model # 77168100

Dimensions 5-3/4" x 4-5/8"

Alternate Part #'s 56-102-1005, PEN77168100

Product Description


Providing big lighting performance for smaller pools and spas

The AquaLight ® uses halogen quartz bulbs and designed for installation in small plastic or stainless steel Pentair niches. The light shell is high-quality stainless steel and the lens is Prismatic tempered glass.


  • Prismatic tempered glass lens
  • Stainless steel housing
  • Easy service stainless steel clamp
  • Halogen-quartz lamp
  • Gold diffused low water cutoff
  • Easy to service

Product Specifications

250 W
120 V
Cord Length:
50 ft.

?     Asked on 4/20/2021by John Bersch

Do you have an LED light that will replace this old light? 250W 120V? Thank you


A  Answered on 4/21/2021 by InyoPools Product Specialist Craig C.

Hello John.  According to the picture of the light fixture you provided, the following Pentair light fixture should fit your niche, IntelliBrite 5G 120V 100' Color LED Light - EC640122.  Please note this fixture comes with a 100 ft cord length.  

?     Asked on 6/4/2020by Iruretagoyena Carlos

I have a pentair 77168100 i need to replace the bulb, do you have a led option in white or color? Thanks

A  Answered on 6/9/2020 by InyoPools Product Specialist Hector F.

Unfortunately, your light model does not have an LED bulb replacement option so you would need to replace the entire fixture with either one of the Pentair Intellibrite models or a standard Spabrite then use an LED bulb in that model. 

?     Asked on 6/1/2020by Barry Crabtree

What is a LED option with white light only to replace this older light?

A  Answered on 6/10/2020 by InyoPools Product Specialist Hector F.

You would need to use the Pentair Spabrite model 78106100 that you can view by clicking here and use an LED bulb that you can view your options by clicking here

?     Asked on 5/29/2019by jerry daniel

amazon has this same light for $153.00 CAN YOU MATCH THAT PRICE

A  Answered on 6/8/2019 by InyoPools Product Specialist Michelle B.

Hello, Unfortunately, we are unable to price match amazon.

?     Asked on 1/18/2019by MR KIRK J SIMONEAUX

I have an existing Pentair 77168100 250Watt spa light. I have replaced the fixture several times. Is there an LED fixture that would fit in the same recessed housing currently installed for the 77168100?

A  Answered on 1/21/2019 by InyoPools Product Specialist Lennox H.

Hi, Kirk. You can use the Pentair Intellibrite 5g 120v 50' Color LED Spa Light - 640121.

  • Commented on 1/21/2019 by Product Owner

    What would be the model if I did not want color. White only?

    • Commented on 1/21/2019 by InyoPools Product Specialist Lennox H.

      Hi, Kirk. The Intellibrite 5g 120v 50' White LED Spa Light - 640141 is the LED white model. 

?     Asked on 9/20/2018by Kasey Wright

I believe this is the light I am needing, but the cord is much longer than what I need. My light says Series 77XXXXXX, 250 watts, 120 volts, T-4 bulb type, use with models 7824XXXX & 792066XX fixture housing. OD is 5 3/4"; ID is 3 1/4" I only need about a 3 foot cord. Which light do I need, and what are the cord options? Thank you!

A  Answered on 9/20/2018 by InyoPools Product Specialist Lennox H.

Hi, Kasey. You can use Model # 77161100 which is a 15 ft option the fixture with the shortest cord length available. 

?     Asked on 9/5/2017by Dale

My light looks like this one but the overall dimensions are: face diameter 6", depth 4.5" (from back side to front of lens. It is 20 years old and finally needs replaced. The label says: Series 77XXXX, Watts 250, Volts 120, Bulb type T-4. What is the right replacement light fixture for me?

A  Answered on 9/7/2017 by InyoPools Product Specialist Lennox H.

Hi, Dale. The AquaLight series fixture is the correct replacement. 

?     Asked on 6/12/2016by Jack

We currently has the 77168100 Pentair Water pool and spa light. We are in need to a replacement gasket for that light and the wire clamp bolt. Where can we get those items?

A  Answered on 6/12/2016 by InyoPools Product Specialist Patrick P.

Hi Jack, you would require this Pentair AquaLight O-ring and this Pentair AquaLight Wire Clamp.

?     Asked on 4/7/2016by Jay

What is the snap on color lens cover kit 6pack? part number for this Pentair light77168100 thanks

A  Answered on 4/7/2016 by InyoPools Product Specialist Lennox H.

Hi Jay, The kit you're referring to is the Spa Brite/Aqua Light Lens Cover Set (650019).

?     Asked on 3/22/2016by Mike

Can i convert this to an LED light bulb?

A  Answered on 3/23/2016 by InyoPools Product Specialist Lennox H.

Hi Mike, The AquaLight can not be converted to LED.

?     Asked on 2/28/2016by Frank Meza

I have this fixture I need a bulb replacement It says bulb type t4 250 watts and 120 volts it has two thin pins on bottom what bulb do I need

A  Answered on 3/1/2016 by InyoPools Product Specialist Lennox H.

Hi Frank, The Bulb, Quartz - 120v 250w-twist (JD250DC/120) will be the bulb needed based on the description provided. It is recommended that you also replace the AquaLight Silicone Gasket (79108600).

?     Asked on 8/22/2015by Chris

I have these existing Pentair Aqualights 77168100. Is there an LED light replacement that will fit the niche?

A  Answered on 8/25/2015 by InyoPools Product Specialist Lennox H.

Hi Chris, The Intellibrite 5g 120v 50' Color LED Spa Light (640121) will replace your Pentair Aqualight 77168100 and fit into your existing niche.

?     Asked on 6/10/2015by raymond

What are the fixture dimensions

A  Answered on 6/10/2015 by InyoPools Product Specialist Lennox H.

Raymond, The Pentair AquaLight 250W, 120V 50ft. Cord w/ SS Face Ring Fixture is measured: Face Diameter: 5.58", Body Length 5.45"


Est. Repair Time

1 to 2 hrs

Tools Needed

Screwdriver, Socket Set, wire strippers

1     0

Needed to Replace Old Style Incandescent Spa Light Bulb with New LED.

Written on 12/13/2018 by Guest

Well, we received the new LED bulb, drained the spa, disassembled the spa light and... the incandescent bulb was the old style with the mini base! The base was cemented in with resin, so we'd have to replace the entire 50' assembly.

I'll skip the part about convincing Inyo of the problem and receiving the wrong replacement... they're smarter now, just like me... and we received a Pentel assembly with the proper base.

Now we had to isolate the proper cable end, disconnect it after pulling the proper circuit breaker, cut the end off the old cable and wire it to the new one and seal it with electrical tape. I also coated the new cable with WD-40 to make it slip easier inside the 50' of conduit.

With one of us pulling the old cable and the other feeding the new one, we fed the new one in, reinstalled the bezel in the spa, refilled the spa, turned on the light, and WOW... it worked... beautifully! This is really a two-man job pulling the cable through the conduit.

Were these instructions helpful?