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0.64 in. (1)

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0.68 in. (1)

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0.792 in. (2)

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Single (10)

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1.135 in. (2)

I could not verify this exact Pioneer part number from authoritative sources during this pass, so all spec fields remain blank. (1)

Official Pioneer retainer table lists 817100 as 11/32 in stem retainer with A/B/C dimensions 1.240/0.865/0.680. Footnote (1) states 1.700 in installed height. Packaged 16/card. (1)

Official Pioneer retainer table lists 817102 as 11/32 in stem retainer with A/B/C dimensions 1.375/1.060/0.675. Footnote (3): 0.040 in taller installed height than 817100. Used with both single and dual springs in the official spring table, so spring styl (1)

Official Pioneer retainer table lists 817104 as 11/32 in stem retainer with A/B/C dimensions 1.375/1.075/0.792. Footnote (4): 0.100 in taller installed height than 817100. Used with both single and dual springs in the official spring table, so spring styl (1)

Official Pioneer retainer table lists 817105 as 3/8 in stem retainer with A/B/C dimensions 1.375/1.075/0.792. Footnote (5): 0.100 in taller installed height than 817103. Used with both single and dual springs in the official spring table, so spring style/ (1)

Official Pioneer retainer table lists 817111 for Chevy small-block Vortec with 810109 valve spring, A/B dimensions 1.030/0.640, 11/32 in stem. Footnote (1) states 1.700 in installed height. Packaged 16/card. (1)

Official Pioneer spring/retainer tables pair 817103 with 810012 single w/damper spring for Chrysler small-block V8. Retainer A/B/C dimensions 1.375/1.060/0.675. Installed height not stated directly on retainer page. (1)

Official Pioneer spring/retainer tables pair 817106 with 810103 single w/damper spring for Chrysler big-block V8. Retainer A/B/C dimensions 1.500/1.135/0.635. Footnote (6): 0.110 in taller installed height than 817103. (1)

Official Pioneer spring/retainer tables pair 817107 with 810202 dual spring. Official retainer table dimensions A/B/C 1.500/1.135/0.725, 3/8 in stem, 7 degree, and footnotes (7)(8): 0.180 in taller installed height than 817103 and must use 816142 valve lo (1)

Official Pioneer spring/retainer tables pair 817108 with 810107 and 810108 single w/damper springs. Retainer A/B/C dimensions 1.125/0.855/0.640. Footnote (9): 0.075 in taller installed height than 817100. (1)

Official Pioneer spring/retainer tables pair 817109 with 810109 single conical LS1 spring. Official retainer table lists 8 mm stem. Summit filtered result for exact part family exposes 1.030 in outside diameter, 0.650 in inside diameter, steel, 7 degree, (1)

Official Pioneer spring/retainer tables pair 817110 with 810206 dual spring and 816175 10 degree locks. Retainer A/B/C dimensions 1.400/1.060/0.690, 11/32 in stem. Footnote (4): 0.100 in taller installed height than 817100. Summit exact page confirms part (1)

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Pioneer Automotive Industries, LLC 817110

Pioneer Automotive Industries, LLC 817110

Pioneer Automotive Industries High Perf Retainer. Designed as a direct OEM replacement for reliable engine performance.

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Pioneer Automotive Industries, LLC 817111

Pioneer Automotive Industries, LLC 817111

Pioneer Automotive Industries High Perf Retainer. Designed as a direct OEM replacement for reliable engine performance.

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Fitment for Part #: 817111

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