{"product_id":"cpi-black-spinweld-patch-holding-tank-4-5-od-69lb","title":"CPI - Black Spinweld Patch for RV Plastic Holding Tanks - 3.75\" Pilot x 4.50\" OD - 3-3\/4\" Hole Size - Part # 69LB","description":"\u003cdiv style=\"background:#f3f4f6;border-left:4px solid #1d9bf0;padding:16px;margin-bottom:12px;\"\u003e\u003cstrong style=\"color:#1d9bf0;\"\u003e✓ ElkhartRVParts.com - The Only Authorized Place for CPI\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"background:#f3f4f6;border-left:4px solid #10b981;padding:16px;margin-bottom:24px;\"\u003e\u003cstrong style=\"color:#10b981;\"\u003e✓ 100% Verified Authentic OEM Grade Part\u003c\/strong\u003e\u003c\/div\u003e\n\n\u003cp\u003eWhen your RV plastic holding tank develops a hole, the CPI 69LB Black Spinweld Patch delivers a fast, reliable, OEM-grade repair. Engineered specifically for RV fresh water and holding tank applications, this 4-1\/2\" patch covers a 3-3\/4\" hole with a precision spinweld fit — no guesswork, no leaks.\u003c\/p\u003e\n\n\u003ch2\u003eFeatures \u0026amp; Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 69LB (CPI \/ Elkhart Plastics)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePilot Diameter:\u003c\/strong\u003e 3.75\" (3-3\/4\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Diameter:\u003c\/strong\u003e 4.50\" (4-1\/2\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Size Covered:\u003c\/strong\u003e 3-3\/4\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e OEM-grade plastic — compatible with standard RV holding tank materials\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Spinweld method for a secure, watertight seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e RV fresh water tanks, black water holding tanks, gray water tanks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the CPI 69LB Spinweld Patch?\u003c\/h2\u003e\n\u003cp\u003eNot all RV holding tank patch fittings are created equal. The CPI 69LB is a factory-spec part sourced directly from CPI (Elkhart Plastics) — the same manufacturer that supplies original equipment to major RV builders. When you need an RV holding tank patch fitting that installs correctly the first time, this is the part professionals reach for.\u003c\/p\u003e\n\u003cp\u003eThe spinweld installation method creates a permanent, vibration-resistant bond that outlasts adhesive patches. Whether you're a DIY RV owner or a certified technician, the 3.75\" pilot x 4.50\" OD dimensions make alignment simple and the repair airtight.\u003c\/p\u003e\n\n\u003ch2\u003eCompare RV Holding Tank Patch Fittings\u003c\/h2\u003e\n\u003cp\u003eNot sure which patch size fits your tank hole? Use this comparison to find the right CPI spinweld patch for your application.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-family:sans-serif;font-size:14px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background:#dc2626;color:#fff;\"\u003e\n\u003cth style=\"padding:10px 12px;text-align:left;border:1px solid #e5e7eb;\"\u003eModel (Part #)\u003c\/th\u003e\n\u003cth style=\"padding:10px 12px;text-align:left;border:1px solid #e5e7eb;\"\u003ePilot Diameter\u003c\/th\u003e\n\u003cth style=\"padding:10px 12px;text-align:left;border:1px solid #e5e7eb;\"\u003eOuter Diameter\u003c\/th\u003e\n\u003cth style=\"padding:10px 12px;text-align:left;border:1px solid #e5e7eb;\"\u003eHole Size\u003c\/th\u003e\n\u003cth style=\"padding:10px 12px;text-align:left;border:1px solid #e5e7eb;\"\u003eBest For\u003c\/th\u003e\n\u003cth style=\"padding:10px 12px;text-align:left;border:1px solid #e5e7eb;\"\u003eView Details\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"border-left:3px solid #dc2626;background:#fef2f2;\"\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003e\u003cstrong\u003eCPI 69LB\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003e3.75\"\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003e4.50\"\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003e3-3\/4\"\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003eLarge hole repair on holding tanks\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003e\u003cstrong\u003eCurrent Product\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003eCPI 71B\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003e2.200\"\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003e3.400\"\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003e~2\"\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003eMedium hole repair\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003e\u003ca href=\"\/products\/cpi-patch-2-200-pilot-x-3-400-od-black\"\u003eView\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9fafb;\"\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003eCPI 51B\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003e1.550\"\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003e2.300\"\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003e~1-1\/2\"\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003eSmall-medium hole repair\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003e\u003ca href=\"\/products\/cpi-patch-1-550-pilot-x-2-300-od-black\"\u003eView\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003eCPI 51AB\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003e1.00\"\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003e2.00\"\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003e1\"\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003eSmall hole repair\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003e\u003ca href=\"\/products\/rv-tank-fittings2-black-spin-patch-1-hole-size\"\u003eView\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9fafb;\"\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003eCPI 81\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003e1.75\"\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003e3.00\"\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003e1-3\/4\"\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003eMedium hole repair\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border:1px solid #e5e7eb;\"\u003e\u003ca href=\"\/products\/3-black-patch-1-3-4-hole-size-part-81\"\u003eView\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:13px;color:#6b7280;margin-top:8px;\"\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e Measure the hole diameter in your tank before ordering. The pilot diameter should be slightly larger than the hole for a proper spinweld seal.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 69LB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePilot (Hole Size):\u003c\/strong\u003e 3.75\" (3-3\/4\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Diameter:\u003c\/strong\u003e 4.50\" (4-1\/2\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.7 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Type:\u003c\/strong\u003e Spinweld\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Tanks:\u003c\/strong\u003e RV plastic holding tanks, fresh water tanks, gray water tanks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e CPI \/ Elkhart Plastics\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x CPI 69LB Black Spinweld Patch\u003c\/li\u003e\n\u003cli\u003eManufacturer warranty applies\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Models \u0026amp; Alternatives\u003c\/h2\u003e\n\u003cp\u003eLooking for a different size? Browse our full line of \u003ca href=\"\/collections\/rv-tank-fittings\"\u003eRV Tank Fittings\u003c\/a\u003e. For smaller holes, consider the \u003ca href=\"\/products\/rv-tank-fittings2-black-spin-patch-1-hole-size\"\u003eCPI 51AB (1\" hole)\u003c\/a\u003e or the \u003ca href=\"\/products\/3-black-patch-1-3-4-hole-size-part-81\"\u003eCPI 81 (1-3\/4\" hole)\u003c\/a\u003e. For medium repairs, the \u003ca href=\"\/products\/cpi-patch-2-200-pilot-x-3-400-od-black\"\u003eCPI 71B\u003c\/a\u003e is a popular choice.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I install a spinweld patch on my RV holding tank?\u003c\/strong\u003e\u003cbr\u003eA spinweld patch is installed using a drill and spinweld tool. The patch spins at high speed against the tank surface, generating friction heat that fuses the plastic for a permanent, watertight seal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the CPI 69LB compatible with black water holding tanks?\u003c\/strong\u003e\u003cbr\u003eYes. The 69LB is designed for use on RV plastic holding tanks including black water, gray water, and fresh water tanks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat hole size does the 69LB patch cover?\u003c\/strong\u003e\u003cbr\u003eThe 69LB covers a 3-3\/4\" (3.75\") hole. The outer diameter is 4.50\" for full coverage and a secure seal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this an OEM part?\u003c\/strong\u003e\u003cbr\u003eYes. CPI (Elkhart Plastics) is an original equipment manufacturer supplying RV builders directly. This is the same part used in factory production.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere can I buy the CPI 69LB spinweld patch?\u003c\/strong\u003e\u003cbr\u003eElkhartRVParts.com is an authorized CPI dealer. Ordering here ensures you receive a genuine OEM-grade part with full manufacturer backing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this patch on a fresh water tank?\u003c\/strong\u003e\u003cbr\u003eYes. The 69LB spinweld patch is compatible with both fresh water and holding tank applications.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Elkhart RV Parts?\u003c\/h2\u003e\n\u003cp\u003eWe are an authorized CPI dealer with direct access to the full Elkhart Plastics catalog. Every part we sell is 100% authentic — no gray market, no counterfeits. We ship fast, stand behind every order, and our AI Live Chat is available to help you confirm fitment before you buy.\u003c\/p\u003e\n\n\u003cdiv style=\"background:#f3f4f6;border-left:4px solid #dc2626;padding:16px;margin-top:24px;\"\u003e\n\u003cstrong style=\"color:#dc2626;\"\u003eReady to repair your RV tank?\u003c\/strong\u003e Add the CPI 69LB to your cart now — or chat with us via AI Live Chat to confirm this is the right patch for your application.\n\u003c\/div\u003e","brand":"CPI","offers":[{"title":"Default Title","offer_id":42500040196248,"sku":"69LB","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0346\/2397\/9579\/products\/69LBblack.jpg?v=1776708820","url":"https:\/\/elkhartrvparts.com\/products\/cpi-black-spinweld-patch-holding-tank-4-5-od-69lb","provider":"Elkhart RV Parts","version":"1.0","type":"link"}