Guardian / Part reference

Guardian GUDT-301 chassis

The Guardian 628 (09-17) and 600SL (6-13) manuals identify GUDT-301 as the chassis and require replacement by a qualified technician. The separate 628FCA (08-16) manual and October 2024 book listings retain their own scopes. Preserve the FCA suffix and the 600SL AC 120 V / 60 Hz edition condition.

US source scopeUpdated 2026-09-15Independent Anderson reference

Match the whole number.

Manufacturer identifier: GUDT-301. Keep every character when comparing it with your label or paperwork. A similar number does not establish the same component.

Guardian replacement-parts book, cover dated October 1, 2024DOCX native table 25, row 2, column group 1; exact model heading 615; assembly item 1 · checked 2026-09-12 · Cover dated October 1, 2024 · Guardian
Guardian replacement-parts book, cover dated October 1, 2024DOCX native table 30, row 2, column group 1; exact model heading 628; assembly item 1 · checked 2026-09-12 · Cover dated October 1, 2024 · Guardian
Guardian replacement-parts book, cover dated October 1, 2024DOCX native table 35, row 2, column group 1; exact model heading 628FCA; assembly item 1 · checked 2026-09-12 · Cover dated October 1, 2024 · Guardian
Guardian replacement-parts book, cover dated October 1, 2024DOCX native table 40, row 2, column group 1; exact model heading 715BBU; assembly item 1 · checked 2026-09-12 · Cover dated October 1, 2024 · Guardian
Guardian replacement-parts book, cover dated October 1, 2024DOCX native table 45, row 2, column group 1; exact model heading 728B; assembly item 1 · checked 2026-09-12 · Cover dated October 1, 2024 · Guardian
Guardian replacement-parts book, cover dated October 1, 2024DOCX embedded table word/media/image38.png, row 2; exact model heading 1160V; assembly item 2 · checked 2026-09-12 · Cover dated October 1, 2024 · Guardian
Guardian replacement-parts book, cover dated October 1, 2024DOCX embedded table word/media/image50.png, row 1; exact model heading 7160V; assembly item 1 · checked 2026-09-12 · Cover dated October 1, 2024 · Guardian
Guardian replacement-parts book, cover dated October 1, 2024DOCX embedded table word/media/image53.png, row 1; exact model heading 7280V; assembly item 1 · checked 2026-09-12 · Cover dated October 1, 2024 · Guardian
Guardian 628 manual: reviewed parts and hardware inventoryPDF page 26 / printed page 26, Opener Assembly Parts table item 1, exact Part No. row · checked 2026-09-12 · 09-17; GDOMU01A-8 · Guardian
Guardian 600SL manual: reviewed parts and hardware inventoryPDF page 26 / printed page 26, Opener Assembly Parts table item 1, exact Part No. row · checked 2026-09-12 · 6-13; GSOMU01A-1 · Guardian
Guardian 628FCA manual parts referencePDF page 26 / printed page 26, assembly table item 1, exact part-number cell · checked 2026-09-12 · 08-16; GDOMU14A-2 · Guardian

Values apply to the exact identifier and scope in the cited source.
Book description (observed model headings 615, 628, 628FCA, 715BBU, 728B, 1160V, 7160V, 7280V; listing context only)	chassis View source and citation details Guardian replacement-parts book, cover dated October 1, 2024DOCX native table 25, row 2, column group 1; exact model heading 615; assembly item 1 · checked 2026-09-12 · Cover dated October 1, 2024 · Guardian
Source revision	Cover dated October 1, 2024 View source and citation details Guardian replacement-parts book, cover dated October 1, 2024DOCX native table 25, row 2, column group 1; exact model heading 615; assembly item 1 · checked 2026-09-12 · Cover dated October 1, 2024 · Guardian
628 / 09-17; GDOMU01A-8: component function (628, 09-17)	chassis View source and citation details Guardian 628 manual: reviewed parts and hardware inventoryPDF page 26 / printed page 26, Opener Assembly Parts table item 1, exact Part No. row · checked 2026-09-12 · 09-17; GDOMU01A-8 · Guardian
628 / 09-17; GDOMU01A-8: applicability note 1 (628, 09-17)	The assembly-parts table requires replacement by a qualified technician. View source and citation details Guardian 628 manual: reviewed parts and hardware inventoryPDF page 26 / printed page 26, Opener Assembly Parts table item 1, exact Part No. row · checked 2026-09-12 · 09-17; GDOMU01A-8 · Guardian
628 / 09-17; GDOMU01A-8: applicability note 2 (628, 09-17)	This is the exact 628 manual with printed revision 09-17 and code GDOMU01A-8. Current stock, later revisions, 628FCA and other models are not established. View source and citation details Guardian 628 manual: reviewed parts and hardware inventoryPDF page 26 / printed page 26, Opener Assembly Parts table item 1, exact Part No. row · checked 2026-09-12 · 09-17; GDOMU01A-8 · Guardian
600SL / 6-13; GSOMU01A-1: component function (600SL, 6-13)	chassis View source and citation details Guardian 600SL manual: reviewed parts and hardware inventoryPDF page 26 / printed page 26, Opener Assembly Parts table item 1, exact Part No. row · checked 2026-09-12 · 6-13; GSOMU01A-1 · Guardian
600SL / 6-13; GSOMU01A-1: applicability note 1 (600SL, 6-13)	The assembly-parts table requires replacement by a qualified technician. View source and citation details Guardian 600SL manual: reviewed parts and hardware inventoryPDF page 26 / printed page 26, Opener Assembly Parts table item 1, exact Part No. row · checked 2026-09-12 · 6-13; GSOMU01A-1 · Guardian
600SL / 6-13; GSOMU01A-1: applicability note 2 (600SL, 6-13)	The reviewed 600SL edition specifies AC 120 V / 60 Hz on printed page 4. Applicability to other electrical editions is not established. View source and citation details Guardian 600SL manual: reviewed parts and hardware inventoryPDF page 26 / printed page 26, Opener Assembly Parts table item 1, exact Part No. row · checked 2026-09-12 · 6-13; GSOMU01A-1 · Guardian
600SL / 6-13; GSOMU01A-1: applicability note 3 (600SL, 6-13)	This is the exact 600SL manual with printed revision 6-13 and code GSOMU01A-1. Current stock, later revisions, other models and cross-part pairings are not established. View source and citation details Guardian 600SL manual: reviewed parts and hardware inventoryPDF page 26 / printed page 26, Opener Assembly Parts table item 1, exact Part No. row · checked 2026-09-12 · 6-13; GSOMU01A-1 · Guardian
628FCA / 08-16; GDOMU14A-2: component function	chassis View source and citation details Guardian 628FCA manual parts referencePDF page 26 / printed page 26, assembly table item 1, exact part-number cell · checked 2026-09-12 · 08-16; GDOMU14A-2 · Guardian
628FCA / 08-16; GDOMU14A-2: applicability condition 1	Only the exact 628FCA manual edition 08-16 / GDOMU14A-2 is reviewed. Preserve the FCA suffix; no generic 628, later edition, current stock or cross-model interchangeability is inferred. View source and citation details Guardian 628FCA manual parts referencePDF page 26 / printed page 26, assembly table item 1, exact part-number cell · checked 2026-09-12 · 08-16; GDOMU14A-2 · Guardian

Documented fitment & exclusions

Read the exact equipment or component, market, production and variant limits in every row. An omitted pairing has not been verified by this reference.

Source statements and their exact conditions. Use the checker below to compare equipment or a component.
Equipment or component / relationship	Evidence and conditions
1160V Documented compatibility From GUDT-301 to 1160V.	Conditional Additional source conditions or an adapter must be checked before confirming compatibility. Details still needed source conditions Use the exact label and the source scope below. An unanswered condition keeps this result conditional or unverified. GUDT-301 is listed directly under model 1160V in the cover dated October 1, 2024 parts book; confirm source revision and exact configuration. Applies only within this source scope Market: US Model scope: 1160V Exact model 1160V listing in the replacement-parts book: Cover dated October 1, 2024. Confirm the exact part and installed configuration; a listing does not establish interchangeability with another revision, model or similarly named item. Guardian replacement-parts book, cover dated October 1, 2024DOCX embedded table word/media/image38.png, row 2; exact model heading 1160V; assembly item 2 · checked 2026-09-12 · Cover dated October 1, 2024 · Guardian
615 Documented compatibility From GUDT-301 to 615.	Conditional Additional source conditions or an adapter must be checked before confirming compatibility. Details still needed source conditions Use the exact label and the source scope below. An unanswered condition keeps this result conditional or unverified. GUDT-301 is listed directly under model 615 in the cover dated October 1, 2024 parts book; confirm source revision and exact configuration. Applies only within this source scope Market: US Model scope: 615 Exact model 615 listing in the replacement-parts book: Cover dated October 1, 2024. Confirm the exact part and installed configuration; a listing does not establish interchangeability with another revision, model or similarly named item. The source footnote for this assembly table requires replacement by a qualified technician. Guardian replacement-parts book, cover dated October 1, 2024DOCX native table 25, row 2, column group 1; exact model heading 615; assembly item 1 · checked 2026-09-12 · Cover dated October 1, 2024 · Guardian Guardian replacement-parts book, cover dated October 1, 2024DOCX native table 25, row 2, column group 1; exact model heading 615; assembly item 1; qualified-technician footnote immediately following native assembly table 25 · checked 2026-09-12 · Cover dated October 1, 2024 · Guardian
628 Documented compatibility From GUDT-301 to 628.	Conditional Additional source conditions or an adapter must be checked before confirming compatibility. Details still needed source conditions Use the exact label and the source scope below. An unanswered condition keeps this result conditional or unverified. GUDT-301 is listed directly under model 628 in the cover dated October 1, 2024 parts book; confirm source revision and exact configuration. Applies only within this source scope Market: US Model scope: 628 Exact model 628 listing in the replacement-parts book: Cover dated October 1, 2024. Confirm the exact part and installed configuration; a listing does not establish interchangeability with another revision, model or similarly named item. The source footnote for this assembly table requires replacement by a qualified technician. The assembly-parts table requires replacement by a qualified technician. This is the exact 628 manual with printed revision 09-17 and code GDOMU01A-8. Current stock, later revisions, 628FCA and other models are not established. Guardian replacement-parts book, cover dated October 1, 2024DOCX native table 30, row 2, column group 1; exact model heading 628; assembly item 1 · checked 2026-09-12 · Cover dated October 1, 2024 · Guardian Guardian replacement-parts book, cover dated October 1, 2024DOCX native table 30, row 2, column group 1; exact model heading 628; assembly item 1; qualified-technician footnote immediately following native assembly table 30 · checked 2026-09-12 · Cover dated October 1, 2024 · Guardian Guardian 628 manual: reviewed parts and hardware inventoryPDF page 26 / printed page 26, Opener Assembly Parts table item 1, exact Part No. row · checked 2026-09-12 · 09-17; GDOMU01A-8 · Guardian
628FCA Documented compatibility From GUDT-301 to 628FCA.	Conditional Additional source conditions or an adapter must be checked before confirming compatibility. Details still needed source conditions Use the exact label and the source scope below. An unanswered condition keeps this result conditional or unverified. GUDT-301 is listed directly under model 628FCA in the cover dated October 1, 2024 parts book; confirm source revision and exact configuration. Applies only within this source scope Market: US Model scope: 628FCA Exact model 628FCA listing in the replacement-parts book: Cover dated October 1, 2024. Confirm the exact part and installed configuration; a listing does not establish interchangeability with another revision, model or similarly named item. In the 628FCA manual (08-16; GDOMU14A-2): Only the exact 628FCA manual edition 08-16 / GDOMU14A-2 is reviewed. Preserve the FCA suffix; no generic 628, later edition, current stock or cross-model interchangeability is inferred. These requirements describe this manual edition only; they are not assigned to other source editions. Guardian replacement-parts book, cover dated October 1, 2024DOCX native table 35, row 2, column group 1; exact model heading 628FCA; assembly item 1 · checked 2026-09-12 · Cover dated October 1, 2024 · Guardian Guardian 628FCA manual parts referencePDF page 26 / printed page 26, assembly table item 1, exact part-number cell · checked 2026-09-12 · 08-16; GDOMU14A-2 · Guardian Guardian 628FCA manual parts referencePDF page 1, exact model and revision on cover · checked 2026-09-12 · 08-16; GDOMU14A-2 · Guardian
715BBU Documented compatibility From GUDT-301 to 715BBU.	Conditional Additional source conditions or an adapter must be checked before confirming compatibility. Details still needed source conditions Use the exact label and the source scope below. An unanswered condition keeps this result conditional or unverified. GUDT-301 is listed directly under model 715BBU in the cover dated October 1, 2024 parts book; confirm source revision and exact configuration. Applies only within this source scope Market: US Model scope: 715BBU Exact model 715BBU listing in the replacement-parts book: Cover dated October 1, 2024. Confirm the exact part and installed configuration; a listing does not establish interchangeability with another revision, model or similarly named item. Guardian replacement-parts book, cover dated October 1, 2024DOCX native table 40, row 2, column group 1; exact model heading 715BBU; assembly item 1 · checked 2026-09-12 · Cover dated October 1, 2024 · Guardian
7160V Documented compatibility From GUDT-301 to 7160V.	Conditional Additional source conditions or an adapter must be checked before confirming compatibility. Details still needed source conditions Use the exact label and the source scope below. An unanswered condition keeps this result conditional or unverified. GUDT-301 is listed directly under model 7160V in the cover dated October 1, 2024 parts book; confirm source revision and exact configuration. Applies only within this source scope Market: US Model scope: 7160V Exact model 7160V listing in the replacement-parts book: Cover dated October 1, 2024. Confirm the exact part and installed configuration; a listing does not establish interchangeability with another revision, model or similarly named item. Guardian replacement-parts book, cover dated October 1, 2024DOCX embedded table word/media/image50.png, row 1; exact model heading 7160V; assembly item 1 · checked 2026-09-12 · Cover dated October 1, 2024 · Guardian
7280V Documented compatibility From GUDT-301 to 7280V.	Conditional Additional source conditions or an adapter must be checked before confirming compatibility. Details still needed source conditions Use the exact label and the source scope below. An unanswered condition keeps this result conditional or unverified. GUDT-301 is listed directly under model 7280V in the cover dated October 1, 2024 parts book; confirm source revision and exact configuration. Applies only within this source scope Market: US Model scope: 7280V Exact model 7280V listing in the replacement-parts book: Cover dated October 1, 2024. Confirm the exact part and installed configuration; a listing does not establish interchangeability with another revision, model or similarly named item. Guardian replacement-parts book, cover dated October 1, 2024DOCX embedded table word/media/image53.png, row 1; exact model heading 7280V; assembly item 1 · checked 2026-09-12 · Cover dated October 1, 2024 · Guardian
728B Documented compatibility From GUDT-301 to 728B.	Conditional Additional source conditions or an adapter must be checked before confirming compatibility. Details still needed source conditions Use the exact label and the source scope below. An unanswered condition keeps this result conditional or unverified. GUDT-301 is listed directly under model 728B in the cover dated October 1, 2024 parts book; confirm source revision and exact configuration. Applies only within this source scope Market: US Model scope: 728B Exact model 728B listing in the replacement-parts book: Cover dated October 1, 2024. Confirm the exact part and installed configuration; a listing does not establish interchangeability with another revision, model or similarly named item. The source footnote for this assembly table requires replacement by a qualified technician. Guardian replacement-parts book, cover dated October 1, 2024DOCX native table 45, row 2, column group 1; exact model heading 728B; assembly item 1 · checked 2026-09-12 · Cover dated October 1, 2024 · Guardian Guardian replacement-parts book, cover dated October 1, 2024DOCX native table 45, row 2, column group 1; exact model heading 728B; assembly item 1; qualified-technician footnote immediately following native assembly table 45 · checked 2026-09-12 · Cover dated October 1, 2024 · Guardian
600SL Documented compatibility From GUDT-301 to 600SL.	Conditional Additional source conditions or an adapter must be checked before confirming compatibility. Details still needed source conditions Use the exact label and the source scope below. An unanswered condition keeps this result conditional or unverified. GUDT-301 is listed in the exact 600SL manual. The source revision and all stated conditions apply. Applies only within this source scope Market: US Model scope: 600SL The assembly-parts table requires replacement by a qualified technician. The reviewed 600SL edition specifies AC 120 V / 60 Hz on printed page 4. Applicability to other electrical editions is not established. This is the exact 600SL manual with printed revision 6-13 and code GSOMU01A-1. Current stock, later revisions, other models and cross-part pairings are not established. Guardian 600SL manual: reviewed parts and hardware inventoryPDF page 26 / printed page 26, Opener Assembly Parts table item 1, exact Part No. row · checked 2026-09-12 · 6-13; GSOMU01A-1 · Guardian

Direct replacement paths

No direct successor for GUDT-301 is verified in this reference.

A direct replacement statement does not establish reverse interchangeability, a kit equivalent or a later replacement chain.

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Part or accessory brand

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Part or accessory

Selected: GUDT-301 · Read its reference. Selection identifies a record; it does not confirm fitment.

Equipment or accessory brand

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An accessory pairing, including a receiver or wall console, applies only to the exact listed pair and source conditions. It does not establish suitability for your installed opener or compatibility through another device.

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Equipment market

Production date, if known

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Recall references

No recall reference is included for this identifier in the published dataset. This is not a safety clearance or proof that no recall exists.

Sources & scope

Guardian 600SL manual: reviewed parts and hardware inventoryGuardian · US · checked 2026-09-12 · 6-13; GSOMU01A-1
Guardian 628 manual: reviewed parts and hardware inventoryGuardian · US · checked 2026-09-12 · 09-17; GDOMU01A-8
Guardian 628FCA manual parts referenceGuardian · US · checked 2026-09-12 · 08-16; GDOMU14A-2
Guardian replacement-parts book, cover dated October 1, 2024Guardian · US · checked 2026-09-12 · Cover dated October 1, 2024

Anderson prepared this reference from the listed evidence. Source statements are not an Anderson installation inspection or independent product test. Official documents stay on their publisher’s website.

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Use Guardian official support and match the complete part number, equipment model and production details with the source scope.

Use safely accessible labels and existing paperwork. Do not remove powered covers or adjust springs or cables to identify a component.

This is an independent Anderson reference. Manufacturer names identify the equipment and do not imply affiliation or authorized-dealer status.

A reference listing does not establish current stock, a price, eligibility for manufacturer support or that a component is faulty.