Part Location Diagram of 163821 DeWALT LOWER BODY, HEAD VALV
See part 13 in the diagram
Replacing your Bostitch Nailer LOWER BODY, HEAD VALV
( Grid squares measure 1x1 inch )

LOWER BODY, HEAD VALV 163821

Manufactured by:
DeWALT
ERP Number:
ERP18980030
Part Number:
163821
Original Equipment Manufacturer ?
$5.95
In Stock
Delivers in 3-5 Business Days!

Easy 

15 - 30 mins 

(1 rated repair) ?

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Product Description

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It is a genuine OEM part which is designed for Bostitch nailers. The head valve is one of the major components in a nailer. When the trigger is depressed the plunger rises up and the compressed air travels to the piston head. If the lower body of the head valve is damaged, this will provide an identical replacement for the original part that was installed on a new unit. Make sure to refer to the appropriate diagrams for your model to ensure the proper replacement procedure. One durable rubber lower body head valve is included. You will need a screwdriver to take the housing apart in order to perform this repair.

Frequently Purchased Together

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Troubleshooting

This part works with the following brands:
  • Bostitch
This part works with the following products:
  • Nailer
Part# 163821 replaces these:
163821, P163821,

Videos For installing this part.

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Replacing your LOWER BODY, HEAD VALV

Questions & Answers

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Customer Repair Instructions

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Easy 

15 - 30 mins 

(1 rated repair) ?
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Sorry, we couldn't find any existing installation instruction that matched.

Leaking air from the head

Nicholas from North Wildwood, New Jersey

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Parts Used:
163844, 163823, 163822, 163821, 163820, 105814
Removed the head and all internal parts. Placed them in order of removal on workbench and installed new parts in reverse order. The only problem was I forgot to purchase a tube of o ring lube. I had some laying around.
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