Combustion chamber finder

Updated 25 Sep 2026

When an oil boiler or furnace combustion chamber cracks or crumbles, a Lynn replacement kit rebuilds it. Pick your brand and model for the Lynn kit that fits, cross-referenced from Lynn Manufacturing's catalog of 55 kits across 38 boiler brands.

On an old unit a failed chamber is often the sign to plan a replacement: see how long oil furnaces last and what a replacement costs. If soot or an oil smell is what sent you here, read oil furnace smells first.

Some links on this page are affiliate links: as an Amazon Associate this site earns from qualifying purchases, and it may earn from other retail partners, at no extra cost to you. Parts shown are general references, not specific endorsements. Match any part to your unit's make, model, and spec before buying.

Confirm before you buy. Match the kit to your unit's rating plate and boiler model before ordering. Fitting a combustion chamber and setting up the burner is licensed-technician work.

Cross-reference data is from Lynn Manufacturing's published Ready Reference; discontinued kits are excluded. Shopping links are affiliate links. Prefer a plain list? Every brand is listed in full below, or grab the whole cross-reference as JSON.

Every brand, every kit

The complete Lynn cross-reference as plain tables: 55 kits across 38 boiler and furnace brands. Find your make, then your series or model.

American Standard combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
A-3 & V3	—	Lynn 1065	Amazon ↗
VP(T)	—	Lynn 1064	Amazon ↗

Bard combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
Oil Furnaces D36C, D48C, D60C, F81, F86CF, F86H, F97, F100CF, FC085, FH085, FH110, FLF085, FLF110, FLR085, FLR110	7090-005	Lynn 1131	Amazon ↗

Bryant combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
BW4 & BW5 Boilers no swing-out door	—	Lynn 1105	Amazon ↗
BW4 & BW5 Boilers with swing-out door	—	Lynn 1132	Amazon ↗

Burnham combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
C3 & C4 Series	—	Lynn 1074	Amazon ↗
LE & LEDV LE1, LE2, LE1-L & H, DV	8203301, 8203302, 8203303	Lynn 1167	Amazon ↗
3W & 4W Series	—	Lynn 1074	Amazon ↗
V1 Series V13, V14, V15, V16, V17, V18, V172, V196	8202211, 8202701, 8202210	Lynn 1064	Amazon ↗
V3 Series V33, V34, V35, V36	8202307, 8202301	Lynn 1065	Amazon ↗
V7 Series no swing-out door V72, V73, V713, V74, V714, V75, V76, V77, V78	8202701, 82027022	Lynn 1066	Amazon ↗
V7 Series with swing-out door V72, V73, V713, V74, V714, V75, V76, V77, V78	8202701, 82027021	Lynn 1074	Amazon ↗
V8 V8H Series V82, V83, V84, V85, V86, V8H2, V8H3, V8H4, V8H5, V8H6	108136-01, 8202701, 82028004	Lynn 1129	Search Amazon ↗
V8 V8H Series V87, V88, V89, V8H7, V8H8, V8H9	—	Lynn 1130	Amazon ↗
MPO MPO-IQ84, IQ115, MPO-IQ147, IQ189	100039-01	Lynn 1177	Amazon ↗
MPO MPO-IQ231	100039-02	Lynn 1178	Amazon ↗
Megasteam MST228, MST396, MST513	—	Lynn 1177	Amazon ↗
Megasteam MST629	—	Lynn 1178	Amazon ↗
EMP EMP84, EMP115, EMP140, EMP182	—	Lynn 1177	Amazon ↗
EMP EMP224	—	Lynn 1178	Amazon ↗
RS/RSM Series RS-109, RS-110, RS-111, RS-112, RS-113, RS-114, RSM-96, RSM-126	—	Lynn 1107	Amazon ↗
RSA Series RSA-85, 110, 111, 125, 135, 154	—	Lynn 1173	Amazon ↗

Carrier combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
Performance 86, BW4 & BW5 no swing-out door	—	Lynn 1105	Amazon ↗
Performance 86, BW4 & BW5 with swing-out door	—	Lynn 1132	Amazon ↗

Columbia combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
CSF Series CSF-365, CSF-3100, CSF-4125, CSF-4150, CSF-5175, CSF-5200, CSF-6225, CSF-7280	—	Lynn 1095	Amazon ↗
CSFH-3 & CSFE CSF(H or E)-365, 3100, 3125, 4100, 4125, 4150, 5125, 5175, 5200, 6150, 7275	—	Lynn 1096	Amazon ↗
LV & LVD Series	337801, 337816, 337803, 337804	Lynn 1172	Amazon ↗
Emerald EM-85, EM-100, EM-110	337345	Lynn 1175	Amazon ↗

Crown combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
Bahama no swing-out door All BD Models	—	Lynn 1105	Amazon ↗
Bahama Swing-Out with swing-out door All BDS Models	—	Lynn 1132	Amazon ↗
Freeport II FWZ060, 080, 100, 130, FSZ080, 100, 130	—	Lynn 1177	Amazon ↗
Freeport II FWZ160, FSZ160	—	Lynn 1178	Amazon ↗
Tobago & Kingston TWZ, KSZ, KSB, TWB	—	Lynn 1155	Amazon ↗

Dunkirk combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
Empire Water no swing-out door 3E, 4E, 5E	14614015, 14619003	Lynn 1105	Amazon ↗
Empire II Water with swing-out door 3EW, 4EW, 5EW	14614014, 14619003	Lynn 1132	Amazon ↗
Empire Steam II ESB, ESC	—	Lynn 1096	Amazon ↗
EV Series DPFO-3	—	Lynn 1075	Amazon ↗
EV Series DPFO-3T, 4, 4T, 5, 5T, DPFO-6T, 7, 8T, 9	—	Lynn 1073	Amazon ↗
SBO Series SBO-3085, SBO-3105, SBO-4125, SBO-4150	—	Lynn 1071	Amazon ↗

Electric Furnace-Man combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
OBT-5 Series All Models	—	Lynn 1067	Amazon ↗

Force combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
VFO Series VFO-3, VFO-4, VFO-5	—	Lynn 1155	Amazon ↗

H.B. Smith combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
BB14 & OB14 All Models	60462	Lynn 1159	Amazon ↗
FD-12 All Models	—	Lynn 1068	Amazon ↗
Series 8 no swing-out door 8-W-3, 8-W-4, 8-W-5, 8-W-6, 8-S-3, 8-S-4, 8-S-5, 8-S-6	69406, 69356	Lynn 1104	Amazon ↗
Series 8 with swing-out door 8-W-3, 8-W-4, 8-W-5, 8-W-6, 8-S-3, 8-S-4, 8-S-5, 8-S-6	69406, 61137, 61138, 61136, 60023	Lynn 1153	Amazon ↗
Series 8HE 8HE-3, 8HE-4, 8HE-5	—	Lynn 1071	Amazon ↗

Hydrotherm combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
PB Series no swing-out door	—	Lynn 1104	Amazon ↗
PB Series with swing-out door	—	Lynn 1153	Amazon ↗

Kerr combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
F70 & F75 Series F70/75-40, 45, 50, 55	2015-114	Lynn 1117	Amazon ↗
F100 Series F100-30, 40, 50, 60	—	Lynn 1119	Search Amazon ↗

Laars combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
Newport NP-85, 100, 110	51-088	Lynn 1174	Amazon ↗

Lennox combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
Conservator Series COWB-3, 4, 5	—	Lynn 1105	Amazon ↗
Conservator Series COWB2-3, 4, 5, OWB86	—	Lynn 1132	Amazon ↗

Memco combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
SST Series no swing-out door	—	Lynn 1105	Amazon ↗
SST Series with swing-out door	—	Lynn 1132	Amazon ↗
CST-Plus CSTO-3	—	Lynn 1075	Amazon ↗
CST-Plus CSTO-3T, 4, 4T, 5, 5T, CSTO-6T, 7, 8T, 9	—	Lynn 1073	Amazon ↗

Metromatic combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
LB/HBSU 84, 100, 120	—	Lynn 1187	Amazon ↗
LB/HBSU 140, 200, 275	—	Lynn 1188	Amazon ↗

Miller/Nordyne combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
Mobile Home CMF, MOC, MGC	901818	Lynn 1029	Amazon ↗
Mobile Home CMF2	—	Lynn 1141	Amazon ↗
M1/M5 Series M1S, M1B, M5S	903423	Lynn 1141	Amazon ↗

National Eagle combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
E3 Series E3-OS, E3-OW	—	Lynn 1155	Amazon ↗

New Yorker combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
All models	C11750	Lynn 1103	Amazon ↗
All models	8203006	Lynn 1173	Amazon ↗
All models	PC12000	Lynn 1106	Amazon ↗
CI-HGS Series CI-HGS-74B, 101B, CI-HGS-129B, 167B	—	Lynn 1177	Amazon ↗
Classic Series CLW-3, 4, 5, 6, CL-3S, 4S, 5S, 6S, 7S	121900, 8202701	Lynn 1134	Amazon ↗
Classic Series no swing-out door CL3-091, 105, 140, CL4-126, 175, 210, CL5-168, 245, 280	270021, 270025	Lynn 1134	Amazon ↗
Classic Series with swing-out door, observation hole on the right side CL3-091, 105, 140, CL4-126, 175, 210, CL5-168, 245, 280	270021, 270025	Lynn 1155	Amazon ↗
Classic Series with swing-out door, observation hole on the left side CL3-091, 105, 140, CL4-126, 175, 210, CL5-168, 245, 280	270021, 270025	Lynn 1074	Amazon ↗
Microtek 3, 3DV	8203301, 8203302, 8203303	Lynn 1167	Amazon ↗
FR Series FR-HGS 98, 122, FR-HGSII 98, 122	62072001	Lynn 1161	Amazon ↗
FR Series FR-147, 173, 205, 232	62072002	Lynn 1162	Amazon ↗
FR Series (Flue Box Kits) FR-HGS 98, 122	62072006	Lynn 1164	Amazon ↗
FR Series (Flue Box Kits) FR-147, 173, 205, 232	62072008	Lynn 1166	Amazon ↗
NY Series NY-124-1, NY-151-1, NY-168-1, NY-194-1, NY-224-1	—	Lynn 1106	Amazon ↗
AP Series AP-490, AP-510, AP-590, AP-670, AP-690, AP-790, APD-96	—	Lynn 1103	Amazon ↗
AP Series AP-780, AP-840, AP-890, AP-1160	—	Lynn 1106	Amazon ↗
AP-U Series AP-490U, AP-590U, AP-690U, AP-790U	—	Lynn 1173	Amazon ↗
S or KD Series 97-AP, 107-AP, 118-AP, 131-AP, 154-AP	—	Lynn 1103	Amazon ↗
S or KD Series 114-AP, 122-AP, 132-AP, 142-AP, 165-AP, 176-AP, 193-AP, 203-AP, 222-AP, 230-AP, 500, 580, 660, 720, 840, 990	—	Lynn 1106	Amazon ↗
PH Series PH-132, PH-142, PH-154, PH-165, PH-176, PH-203, PH-222, PH-230, CPH-165, CPH-176	—	Lynn 1106	Amazon ↗
OS Series OS-123-1, 140-1	—	Lynn 1103	Amazon ↗
OS Series OS-101-1, 113, 120-1, 122, 132, 142, 143-1, 161-1, 165, 170-1, 191-1, 222	—	Lynn 1106	Amazon ↗
UCG Series UGC-100	—	Lynn 1103	Amazon ↗
UCG Series UCG-100, 125, 125-1, 140, 150-1, 154-1, 164, 170, 189-1	—	Lynn 1106	Amazon ↗
WH Series WH-132, WH-142, WH-154, WH-165, WH-176	—	Lynn 1106	Amazon ↗
CI-HGS CI-HGS-74, CI-HGS-101, CI-HGS-123, CI-HGS-160	—	Lynn 1177	Amazon ↗

Olsen combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
Boilers OSFH	—	Lynn 1096	Amazon ↗

Olsen/Airco combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
Furnaces BCL-115, 120, 125, 145(S)(ST), BFL-120, 120T, 145, 145T, HTL-100B/C, WTL-100	9200C, 28562, 8823B1	Lynn 1158	Amazon ↗

Oneida Royal combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
L-HO-145DA4, L-HO-145DA5	—	Lynn 1158	Amazon ↗

Peerless combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
EC/ECT EC-03, EC-04, EC-05, EC-06, ECT-03, ECT-04, ECT-05, ECT-06	50661, 50768, 50765	Lynn 1067	Amazon ↗
JO/JOT/TW JO-3, JO-35, JO-4, JO-45, JO-5, JO-6, JO-75, JOT-3, JOT-35, JOT-4, JOT-45, JOT-5, JOT-6, JOT-75, TWO75, TW100, TW125, TW150, TW175, TW200, TW250, TW275, TW300	50661, CC-3025	Lynn 1067	Amazon ↗
SC/SCT SC-05, SC-06, SC-07, SC-08, SC-09, SC-10, SCT-05, SCT-06, SCT-07, SCT-08, SCT-09, SCT-10	50768, 50765	Lynn 1179	Amazon ↗
WB, WV & WB/WV WB, WV, WV-DV, WBV, WB-03, WB-04, WB-05	50693, 50795, 50794	Lynn 1071	Amazon ↗

Pennco combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
Keystone Water no swing-out door 3K, 4K, 5K	—	Lynn 1105	Amazon ↗
Keystone KWC with swing-out door 3KWC, 4KWC, 5KWC	—	Lynn 1132	Amazon ↗
KSC Steam KSC - All Models	—	Lynn 1096	Amazon ↗
SBO Series SBO-3085, SBO-3105, SBO-4125, SBO-4150	—	Lynn 1071	Amazon ↗

Purepro combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
Advantage AO(T)-3, 4, 5	—	Lynn 1155	Amazon ↗

Rand & Reardon combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
RRO Series All Models	—	Lynn 1155	Amazon ↗

Reznor combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
RA & RAD Waste Oil Heaters 110, 140, 150, 235, 250, 350	—	Lynn 1189	Amazon ↗

Sears combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
Kenmore 44 no swing-out door All 944 Models	—	Lynn 1105	Amazon ↗

Slant/Fin combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
XL-2000 XL-20, XL-30, XL-40, XL-50	—	Lynn 1088	Amazon ↗
Liberty P, PT, PPT, PZ, PZT, L-20, L-20BK, L-30H, L-30HF, L-30, L-40H, L-40, L-50H, L-50HF, L-50, L-60, L-70, L-70C, L-70P, L-70PT, L-70PPT, L-70WKD, L-70WU	—	Lynn 1127	Amazon ↗
Liberty II All LD Models	—	Lynn 1127	Amazon ↗
Intrepid All TR Models	—	Lynn 1127	Amazon ↗
Caravan 600-2-5, 750-2-6, 850-2-7, 900-3-5, 1100-3-6, 1300-3-7, 1700-4-7, 2100-5-7, 2500-6-7, 2900-7-7, 3400-8-7	—	Lynn 1127	Amazon ↗

Thermo-Dynamics combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
LM & LMD Series	337801, 337816, 337803, 337804	Lynn 1172	Amazon ↗
S Series S or STR-85, 100, 110, 125, 135, 150	337350	Lynn 1176	Amazon ↗

Thermoflo combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
Boilers OWB, OWT, OSB, OST	—	Lynn 1126	Amazon ↗

Trianco combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
DBC DBC-85, 100, 110, 115	51-088	Lynn 1174	Amazon ↗

Ultimate Engineering combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
PFO Series PFO-3	—	Lynn 1075	Amazon ↗
PFO Series PFO-3T, 4, 4T, 5, 5T, 6T, 7, 8T, 9	—	Lynn 1073	Amazon ↗

Utica combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
Starfire 2 SF-365, SF-3100, SF-4125, SF-4150, SF-5175, SF-5200, SF-6225, SF-7275	5611508, RD160A	Lynn 1095	Amazon ↗
Starfire 3, 4 & 5 SF(H or E)365, 3085, 3090, 3100, 3125, 4100, 4125, 4145, 4150, 5125, 5160, 5175, 5185, 5200, 6150, 6175, 6210, 6225, 7275	2552901, 2553303, 5611508	Lynn 1096	Amazon ↗
SW Series SW3, SW4, SW5	—	Lynn 1096	Amazon ↗
Constellation All SFM Models	—	Lynn 1096	Amazon ↗

Vaillant combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
F70 & F75 Series F70/75-40, 45, 50, 55	2015-114	Lynn 1117	Amazon ↗
F100 Series F100-30, 40, 50, 60	—	Lynn 1119	Search Amazon ↗

Weil-McLain combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
65 Series 465, 565, 665, 765, 865	—	Lynn 1101	Amazon ↗
66 Series 266, 366, 466, 566, 666, 766	386-500-085	Lynn 1060	Amazon ↗
68 / 68V Series 268, 368, 468, 568, 668, 768, 868, 968	386-500-085	Lynn 1060	Amazon ↗
GO Series (Gold): WTGO, WGO, SGO 2 through 8 sections WGO-2, WGO-3, WGO-4, WGO-5, WGO-6, WGO-7, WGO-8	386-700-355	Lynn 1072	Amazon ↗
GO Series (Gold): WTGO, WGO, SGO 9 sections only WGO-9	386-700-355	Lynn 1148	Amazon ↗
76 Series 476, 576R, 576, 676, 776, 876, 976	—	Lynn 1120	Amazon ↗
78 & 80 Series 4" Burner Opening	—	Lynn 1121	Amazon ↗
78 & 80 Series 6" Burner Opening	—	Lynn 1122	Amazon ↗

Williamson combustion chamber kits

Series / models	OEM part #	Lynn kit	Shop
Boilers OWB, OWT, OSB, OST	—	Lynn 1126	Amazon ↗

A "Search Amazon" button means no verified product page exists for that kit yet.

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