{"product_id":"velvet-drive-71c-72c-reduction-case-bearing-b308ags","title":"Velvet Drive 71C \/ 72C Reduction Case Bearing B308AGS | 1000-130-018","description":"\u003ch2\u003eVelvet Drive 71C \/ 72C Reduction Case Bearing B308AGS\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eLegacy Part Number:\u003c\/strong\u003e B308AGS  |  \u003cstrong\u003eCurrent Part Number:\u003c\/strong\u003e 1000-130-018 (also shown as 1000130018)\u003c\/p\u003e\n\u003cp\u003eThe Velvet Drive B308AGS (current reference 1000-130-018) is a marine transmission ball bearing used in the rear case of 71C \/ 10-17 direct-drive transmissions and as the intermediate case bearing on selected 71C and 72C inline-reduction transmissions. On reduction-equipped models, it sits between the main transmission case and the reduction housing, supporting the rotating assembly at that interface.\u003c\/p\u003e\n\n\u003ch3\u003eTransmission Compatibility\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e71C \/ 10-17 Direct Drive — Rear Case\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVelvet Drive 71C 1:1 direct drive\u003c\/li\u003e\n\u003cli\u003e1017-001  \/  1017-002  \/  1017-003  \/  1017-004\u003c\/li\u003e\n\u003cli\u003eAS1-71C  \/  AS1-71CR\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e71C Inline Reduction — Intermediate Case\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1.88:1 reduction\u003c\/li\u003e\n\u003cli\u003e1.91:1 reduction\u003c\/li\u003e\n\u003cli\u003e2.57:1 reduction\u003c\/li\u003e\n\u003cli\u003e2.91:1 reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e72C Inline Reduction — Intermediate Case\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1.88:1 reduction\u003c\/li\u003e\n\u003cli\u003e1.91:1 reduction\u003c\/li\u003e\n\u003cli\u003e2.57:1 reduction\u003c\/li\u003e\n\u003cli\u003e2.91:1 reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eB308AGS is generally \u003cstrong\u003enot used on 1.52:1 or 2.10:1 reduction configurations\u003c\/strong\u003e. Confirm the transmission model number and ratio before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eFitment Notice — Position and Model Matter\u003c\/h3\u003e\n\u003cp\u003eB308AGS is \u003cstrong\u003enot\u003c\/strong\u003e a universal 71C \/ 72C rear-case bearing. Factory parts listings distinguish:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e71C \/ 10-17 rear case:\u003c\/strong\u003e B308AGS \/ 1000-130-018 (this part)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e72C \/ 10-18 rear case (1:1 direct drive):\u003c\/strong\u003e B309AGS — a different bearing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eB308AGS is used in 72C applications only on \u003cstrong\u003ereduction-equipped\u003c\/strong\u003e 72C transmissions, at the intermediate case position — not as the 72C direct-drive rear bearing. Always verify the transmission identification plate, model number, and gear ratio before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eCross-Reference Part Numbers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLegacy: \u003cstrong\u003eB308AGS\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCurrent: \u003cstrong\u003e1000-130-018\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAlso shown as: \u003cstrong\u003e1000130018\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen to Replace This Bearing\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoughness or binding present during rotation\u003c\/li\u003e\n\u003cli\u003eExcess radial or axial play found in the bearing position\u003c\/li\u003e\n\u003cli\u003eBearing noise present during operation\u003c\/li\u003e\n\u003cli\u003ePitting, corrosion, or race damage visible on inspection\u003c\/li\u003e\n\u003cli\u003eTransmission contamination has affected the bearing\u003c\/li\u003e\n\u003cli\u003eRear or intermediate case is being rebuilt or resealed\u003c\/li\u003e\n\u003cli\u003eReduction-unit overhaul is being performed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm the transmission model number and gear ratio from the identification plate before disassembly\u003c\/li\u003e\n\u003cli\u003eVerify whether this bearing is being installed in the 71C rear case or the intermediate case of a reduction unit — the location affects what associated hardware must also be inspected\u003c\/li\u003e\n\u003cli\u003eInspect the bearing retainer and seating surfaces for wear or scoring\u003c\/li\u003e\n\u003cli\u003ePress the bearing squarely using appropriate bearing tools — do not press through the rolling elements\u003c\/li\u003e\n\u003cli\u003eInspect associated snap rings, retainers, gaskets, and oil seals and replace as needed\u003c\/li\u003e\n\u003cli\u003eVerify shaft end play and transmission clearances per Velvet Drive service procedures during reassembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Parts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131362521124\"\u003eVelvet Drive 71C \/ 72C Gasket \u0026amp; Oil Seal Kit A4867HA\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131361865764\"\u003eVelvet Drive Needle Bearing — 4840D\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131361898532\"\u003eVelvet Drive Double Ball Bearing — 71 Series | 4920A\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131362390052\"\u003eVelvet Drive Input Shaft — 71C \/ 72VDR Series | 71C-3A16\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131361832996\"\u003eVelvet Drive Shift Spool O-Ring — 71C \/ 72C | 4804H\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131370876964\"\u003eVelvet Drive 5-Inch Output Coupling A4547HA | 10-Tooth Coarse Spline\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131362553892\"\u003eVelvet Drive 71C Forward Piston Housing Bearing B107A | 10-17 \/ 1017\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003eThe B308AGS comes up most often during 71C direct-drive rebuilds — it’s the rear-case bearing and is routinely replaced alongside the gasket and seal kit during a full overhaul. On reduction-equipped transmissions, it also appears at the intermediate case position, which means it can turn up in both 71C and 72C rebuilds depending on the ratio.\u003c\/p\u003e\n\u003cp\u003eThe most common ordering mistake is assuming B308AGS covers all 71C and 72C rear cases. It does not — the 72C 1:1 direct drive uses B309AGS. Customers rebuilding a reduction unit who find this bearing at the case interface are correct to use B308AGS, but those rebuilding a 72C 1:1 direct drive need a different part. The other common issue is not confirming the gear ratio first: B308AGS is not used in 1.52:1 or 2.10:1 reduction configurations, so ordering by transmission family alone can result in the wrong bearing arriving on the bench.\u003c\/p\u003e","brand":"BOR","offers":[{"title":"Default Title","offer_id":43563780014116,"sku":"B308AGS","price":184.22,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/a525aabd-424f-4a81-8eb9-16a284a8472d.png?v=1788811088","url":"https:\/\/marisolmarine.com\/products\/velvet-drive-71c-72c-reduction-case-bearing-b308ags","provider":"Marisol Marine Company","version":"1.0","type":"link"}