Skip to accessibility statement
Free shipping on orders over $99
●
Your Zip:
43230
ORDER STATUS
Your Zip:
43230
HELP
MENU
CONTACT & SUPPORT
Live Chat Offline:
Email Us
SIGN IN
0
CART
×
SIGN IN
Shop by Category
Plumbing
Heating
HVAC
Electrical
PEX
Fittings
Valves
Tools
Resources
Our Team
Account
Order History
Returns
Customer Support
Give Us Feedback
Tools
Reorder
Quick Order
Saved Carts
Lists
Resources
PEX Plumbing
PEX Tools
Radiant Heat
Boiler Room
Plumbing Supplies
Air Conditioning
Video Library
Project Calculators
Find Parts For Your Unit
Filter menu expanded
Filters
Hide Filters
195 items
Reset
SORT
Top Sellers
Default
Price ▲
Price ▼
Product Availability
–
Show In Stock Only</strong> Filter (44)
Show
In Stock Only
(44)
Used With
–
AHE Boilers Filter (2)
AHE Boilers (2)
CG Boilers Filter (29)
CG Boilers (29)
CG-5 Boilers Filter (1)
CG-5 Boilers (1)
CG-25 Boilers Filter (1)
CG-25 Boilers (1)
CGa Boilers Filter (27)
CGa Boilers (27)
CGa-5 Boilers Filter (2)
CGa-5 Boilers (2)
CGa-25 Boilers Filter (3)
CGa-25 Boilers (3)
CGi Boilers Filter (85)
CGi Boilers (85)
CGi-3 Boilers Filter (13)
CGi-3 Boilers (13)
CGi-4 Boilers Filter (12)
CGi-4 Boilers (12)
See More
Review Score
–
5 Filter (29)
(29)
4 Filter (3)
(3)
3 Filter (3)
(3)
Price Range
–
$10 to $15 Filter (22)
$10 to $15 (22)
$15 to $20 Filter (11)
$15 to $20 (11)
$20 to $25 Filter (2)
$20 to $25 (2)
$25 to $30 Filter (2)
$25 to $30 (2)
$30 to $35 Filter (4)
$30 to $35 (4)
$40 to $45 Filter (1)
$40 to $45 (1)
$45 to $50 Filter (1)
$45 to $50 (1)
$50 to $60 Filter (14)
$50 to $60 (14)
$60 to $70 Filter (4)
$60 to $70 (4)
$70 to $80 Filter (6)
$70 to $80 (6)
See More
Home
Heating Supplies & Parts
Boiler Parts
Weil McLain Boiler Parts
Weil McLain CGi Boiler Parts
Weil McLain CGi Boiler Parts
FIND PARTS FOR YOUR UNIT
195 items
FILTER
Grid
List
Sort: Top Sellers
450-003-689 Compare Checkbox
Compare
Pilot Bracket, 450-003-689
SKU:
450-003-689
Weil-McLain
SKU:
450-003-689
Brand:
Weil-McLain
–
+
$32.80
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
591-391-894 Compare Checkbox
Compare
Wiring Harness - Controls to Control Module, 591-391-894
SKU:
591-391-894
Weil-McLain
SKU:
591-391-894
Brand:
Weil-McLain
–
+
$51.85
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
560-529-078 Compare Checkbox
Compare
Main Burner Orifice, LP Gas, 560-529-078
SKU:
560-529-078
Weil-McLain
SKU:
560-529-078
Brand:
Weil-McLain
–
+
$12.90
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
510-811-225 Compare Checkbox
Compare
Natural to Propane Conversion Kit, 510-811-225
SKU:
510-811-225
Weil-McLain
SKU:
510-811-225
Brand:
Weil-McLain
–
+
$543.13
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
450-003-742 Compare Checkbox
Compare
Burner Rest, 450-003-742
SKU:
450-003-742
Weil-McLain
SKU:
450-003-742
Brand:
Weil-McLain
(1)
–
+
$14.02
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
381-355-759 Compare Checkbox
Compare
Panel, right side, with insulation, 381-355-759
SKU:
381-355-759
Weil-McLain
SKU:
381-355-759
Brand:
Weil-McLain
–
+
$263.10
each
ADD TO CART
Add to List
In Stock
Get 1 by
Tomorrow, Aug 19
In Stock
Get 1 by
Tomorrow, Aug 19
Add to List
381-354-332 Compare Checkbox
Compare
CGi5 Base Insulation Kit, 381-354-332
SKU:
381-354-332
Weil-McLain
SKU:
381-354-332
Brand:
Weil-McLain
–
+
$310.96
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
550-320-162 Compare Checkbox
Compare
Rear Spacer Strip, 550-320-162
SKU:
550-320-162
Weil-McLain
SKU:
550-320-162
Brand:
Weil-McLain
–
+
$13.04
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
450-003-692 Compare Checkbox
Compare
Burner Mounting Panel, 450-003-692
SKU:
450-003-692
Weil-McLain
SKU:
450-003-692
Brand:
Weil-McLain
–
+
$16.84
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
510-811-263 Compare Checkbox
Compare
LP to NG Conversion Kit For Weil McLain CGi-3 & CGi-5 Boilers, 510-811-263
SKU:
510-811-263
Weil-McLain
SKU:
510-811-263
Brand:
Weil-McLain
(1)
–
+
$317.82
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
311-103-821 Compare Checkbox
Compare
Right Hand End Section 51128, 311-103-821
SKU:
311-103-821
Weil-McLain
SKU:
311-103-821
Brand:
Weil-McLain
–
+
$401.64
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
591-391-980 Compare Checkbox
Compare
Harness-Wiring Indcr/Blower CGi/GWI, 591-391-980
SKU:
591-391-980
Weil-McLain
SKU:
591-391-980
Brand:
Weil-McLain
–
+
$16.70
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
321-114-289 Compare Checkbox
Compare
Replacement Section Assembly, 321-114-289
SKU:
321-114-289
Weil-McLain
SKU:
321-114-289
Brand:
Weil-McLain
–
+
$1,568.35
each
ADD TO CART
Add to List
In Stock
Get 1 by
Fri, Aug 21 - Tue, Aug 25
In Stock
Get 1 by
Fri, Aug 21 - Tue, Aug 25
Add to List
450-003-740 Compare Checkbox
Compare
Burner Rest, 450-003-740
SKU:
450-003-740
Weil-McLain
SKU:
450-003-740
Brand:
Weil-McLain
–
+
$15.58
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
511-624-452 Compare Checkbox
Compare
Pressure Differential Switch, .75" W.C., for CGi Boilers (Sizes 5, 6), 511-624-452
SKU:
511-624-452
Weil-McLain
SKU:
511-624-452
Brand:
Weil-McLain
(18)
–
+
$102.69
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
511-624-451 Compare Checkbox
Compare
Pressure Differential Switch, 511-624-451
SKU:
511-624-451
Weil-McLain
SKU:
511-624-451
Brand:
Weil-McLain
–
+
$93.78
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
381-355-883 Compare Checkbox
Compare
CGi7 PIN S3 Left Jacket Panel, 381-355-883
SKU:
381-355-883
Weil-McLain
SKU:
381-355-883
Brand:
Weil-McLain
–
+
$86.81
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
381-355-889 Compare Checkbox
Compare
CGi8 PIN S3 Left Jacket Panel, 381-355-889
SKU:
381-355-889
Weil-McLain
SKU:
381-355-889
Brand:
Weil-McLain
–
+
$94.87
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
381-355-601 Compare Checkbox
Compare
Panel, left side, with insulation (Propane Gas), 381-355-601
SKU:
381-355-601
Weil-McLain
SKU:
381-355-601
Brand:
Weil-McLain
–
+
$250.06
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
381-354-333 Compare Checkbox
Compare
CGi6 Base Insulation Kit, 381-354-333
SKU:
381-354-333
Weil-McLain
SKU:
381-354-333
Brand:
Weil-McLain
–
+
$214.96
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
381-355-895 Compare Checkbox
Compare
CGi25 PIL S3 Left Jacket Panel, 381-355-895
SKU:
381-355-895
Weil-McLain
SKU:
381-355-895
Brand:
Weil-McLain
–
+
$94.87
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
381-355-743 Compare Checkbox
Compare
Kit-S Panel-I Jacket CGt-5 PIN, 381-355-743
SKU:
381-355-743
Weil-McLain
SKU:
381-355-743
Brand:
Weil-McLain
–
+
$258.51
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
381-354-334 Compare Checkbox
Compare
CGi7 Base Insulation Kit, 381-354-334
SKU:
381-354-334
Weil-McLain
SKU:
381-354-334
Brand:
Weil-McLain
–
+
$312.08
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
381-355-898 Compare Checkbox
Compare
CGi3 PIL S3 Left Jacket Panel, 381-355-898
SKU:
381-355-898
Weil-McLain
SKU:
381-355-898
Brand:
Weil-McLain
–
+
$94.87
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
511-330-104 Compare Checkbox
Compare
Pilot Burner (J992 LYW-7125) for CGi, CGS Boilers, 511-330-104
SKU:
511-330-104
Weil-McLain
SKU:
511-330-104
Brand:
Weil-McLain
–
+
$185.04
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
381-355-546 Compare Checkbox
Compare
Kit-S Panel-L Jacket CGi4 PIN, 381-355-546
SKU:
381-355-546
Weil-McLain
SKU:
381-355-546
Brand:
Weil-McLain
–
+
$250.06
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
321-114-290 Compare Checkbox
Compare
Replacement Section Assembly (Size 7), 321-114-290
SKU:
321-114-290
Weil-McLain
SKU:
321-114-290
Brand:
Weil-McLain
–
+
$1,929.38
each
ADD TO CART
Add to List
Backorder
Get it by
Fri, Sep 18 - Tue, Oct 20
Backorder
Get it by
Fri, Sep 18 - Tue, Oct 20
Add to List
381-354-335 Compare Checkbox
Compare
CGi8 Base Insulation Kit, 381-354-335
SKU:
381-354-335
Weil-McLain
SKU:
381-354-335
Brand:
Weil-McLain
–
+
$222.11
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
450-003-731 Compare Checkbox
Compare
Base Pan, 450-003-731
SKU:
450-003-731
Weil-McLain
SKU:
450-003-731
Brand:
Weil-McLain
–
+
$65.67
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
381-359-258 Compare Checkbox
Compare
Kit-S Panel-D Jacket CGi S4 Size E, 381-359-258
SKU:
381-359-258
Weil-McLain
SKU:
381-359-258
Brand:
Weil-McLain
–
+
$219.41
each
ADD TO CART
Add to List
In Stock
Get 1 by
Thu, Aug 20
In Stock
Get 1 by
Thu, Aug 20
Add to List
381-355-901 Compare Checkbox
Compare
CGi4 PIL S3 Left Jacket Panel, 381-355-901
SKU:
381-355-901
Weil-McLain
SKU:
381-355-901
Brand:
Weil-McLain
–
+
$94.87
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
321-114-291 Compare Checkbox
Compare
Replacement Section Assembly, 321-114-291
SKU:
321-114-291
Weil-McLain
SKU:
321-114-291
Brand:
Weil-McLain
–
+
$2,149.42
each
ADD TO CART
Add to List
Backorder
Get it by
Fri, Sep 18 - Tue, Oct 20
Backorder
Get it by
Fri, Sep 18 - Tue, Oct 20
Add to List
381-355-604 Compare Checkbox
Compare
Panel, left side, with insulation (Propane Gas), 381-355-604
SKU:
381-355-604
Weil-McLain
SKU:
381-355-604
Brand:
Weil-McLain
–
+
$267.11
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
381-355-572 Compare Checkbox
Compare
Panel, top rear, with insulation, 381-355-572
SKU:
381-355-572
Weil-McLain
SKU:
381-355-572
Brand:
Weil-McLain
–
+
$227.89
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
381-354-337 Compare Checkbox
Compare
Base assembly kit, 381-354-337
SKU:
381-354-337
Weil-McLain
SKU:
381-354-337
Brand:
Weil-McLain
–
+
$662.21
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
450-003-732 Compare Checkbox
Compare
Base Pan, 450-003-732
SKU:
450-003-732
Weil-McLain
SKU:
450-003-732
Brand:
Weil-McLain
–
+
$69.90
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
381-355-782 Compare Checkbox
Compare
High altitude LP orifice kit - 0-1.99K, 381-355-782
SKU:
381-355-782
Weil-McLain
SKU:
381-355-782
Brand:
Weil-McLain
–
+
$56.47
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
381-355-904 Compare Checkbox
Compare
CGi5 PIL S3 Left Jacket Panel, 381-355-904
SKU:
381-355-904
Weil-McLain
SKU:
381-355-904
Brand:
Weil-McLain
–
+
$94.87
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
381-354-581 Compare Checkbox
Compare
Collector Hood and Transition Replacement Kit for CGi-25, 381-354-581
SKU:
381-354-581
Weil-McLain
SKU:
381-354-581
Brand:
Weil-McLain
–
+
$300.00
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
381-354-519 Compare Checkbox
Compare
Base replacement insulation carton CG(m) 6-9, 381-354-519
SKU:
381-354-519
Weil-McLain
SKU:
381-354-519
Brand:
Weil-McLain
–
+
$275.90
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
591-391-989 Compare Checkbox
Compare
Harness-Wiring Control to Modulating CGi4, 591-391-989
SKU:
591-391-989
Weil-McLain
SKU:
591-391-989
Brand:
Weil-McLain
–
+
$27.18
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Oct 29 - Fri, Nov 27
Backorder
Get it by
Thu, Oct 29 - Fri, Nov 27
Add to List
381-359-244 Compare Checkbox
Compare
Kit-S Panel-BT Jacket CGi S4 Size C, 381-359-244
SKU:
381-359-244
Weil-McLain
SKU:
381-359-244
Brand:
Weil-McLain
–
+
$184.18
each
ADD TO CART
Add to List
In Stock
Get 1 by
Thu, Aug 20
In Stock
Get 1 by
Thu, Aug 20
Add to List
550-320-163 Compare Checkbox
Compare
Rear Spacer Strip, 550-320-163
SKU:
550-320-163
Weil-McLain
SKU:
550-320-163
Brand:
Weil-McLain
–
+
$12.90
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
550-320-219 Compare Checkbox
Compare
KIT BOILER LEG CGE S2, 550-320-219
SKU:
550-320-219
Weil-McLain
SKU:
550-320-219
Brand:
Weil-McLain
–
+
$88.23
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
591-319-795 Compare Checkbox
Compare
Wiring Harness, 591-319-795
SKU:
591-319-795
Weil-McLain
SKU:
591-319-795
Brand:
Weil-McLain
–
+
$78.69
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
381-355-573 Compare Checkbox
Compare
Panel, door, 381-355-573
SKU:
381-355-573
Weil-McLain
SKU:
381-355-573
Brand:
Weil-McLain
–
+
$235.66
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
450-003-733 Compare Checkbox
Compare
Base Pan, 450-003-733
SKU:
450-003-733
Weil-McLain
SKU:
450-003-733
Brand:
Weil-McLain
–
+
$86.38
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
511-624-365 Compare Checkbox
Compare
Pressure Switch Set, 511-624-365
SKU:
511-624-365
Weil-McLain
SKU:
511-624-365
Brand:
Weil-McLain
–
+
$81.70
each
ADD TO CART
Add to List
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Backorder
Get it by
Thu, Sep 17 - Thu, Oct 15
Add to List
1
2
3
4
5
Refresh
×
Video