Switch - Headlight Switch:All parts for 1977 BUICKREGAL
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| Part # | Engine / Misc Description | Part Description | Click to Check Price |
| DS223 | V6-231 (3.8L) | w/ Twilight Sentinel With Twilight Sentinel  | |
| DS177 | V6-231 (3.8L) | w/o Twilight Sentinel Without Twilight Sentinel  | |
| DS223 | V8-305 (5.0L) | w/ Twilight Sentinel With Twilight Sentinel | |
| DS177 | V8-305 (5.0L) | w/o Twilight Sentinel Without Twilight Sentinel | |
| DS223 | V8-350 (5.7L) | w/ Twilight Sentinel With Twilight Sentinel | |
| DS177 | V8-350 (5.7L) | w/o Twilight Sentinel Without Twilight Sentinel | |
| DS223 | V8-350 (5.7L) | w/ Twilight Sentinel With Twilight Sentinel | |
| DS177 | V8-350 (5.7L) | w/o Twilight Sentinel Without Twilight Sentinel | |
| DS223 | V8-350 (5.7L) | w/ Twilight Sentinel With Twilight Sentinel | |
| DS177 | V8-350 (5.7L) | w/o Twilight Sentinel Without Twilight Sentinel | |
| DS223 | V8-350 (5.7L) | w/ Twilight Sentinel With Twilight Sentinel | |
| DS177 | V8-350 (5.7L) | w/o Twilight Sentinel Without Twilight Sentinel | |
