{"product_id":"os-giken-2016-mazda-miata-mx-5-nd-expanded-capacity-rear-differential-cover","title":"OS Giken 2016+ Mazda Miata MX-5 (ND) Expanded Capacity Rear Differential Cover","description":"\u003cdiv\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003eMZ191-HCR\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/h4\u003e\n\u003ch4\u003e\u003cstrong\u003eOS Giken MZ191-HCR Expanded Capacity Rear Differential Cover – 2016+ Mazda Miata MX-5 ND\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe \u003cstrong\u003eOS Giken MZ191-HCR\u003c\/strong\u003e Expanded Capacity Rear Differential Cover is a premium performance upgrade for the 2016+ Mazda Miata MX-5 (ND chassis). This high-capacity cover increases fluid volume for better cooling and lubrication during spirited driving, track days, or autocross. Precision-machined from high-grade aluminum with a deep finned design, it dissipates heat more effectively than stock while adding structural rigidity to the differential housing. The OS Giken cover features a magnetic drain plug to capture metal particles, a sight glass for easy fluid level checks, and a robust mounting flange with all necessary hardware for direct bolt-on installation. Perfect for street, track, or competition use where sustained high-RPM operation demands superior diff cooling and protection.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eExpanded Fluid Capacity – Increased oil volume for superior cooling and lubrication\u003c\/li\u003e\n\u003cli\u003eFinned Aluminum Construction – Enhanced heat dissipation and added rigidity\u003c\/li\u003e\n\u003cli\u003eMagnetic Drain Plug – Captures metal particles to protect gears and bearings\u003c\/li\u003e\n\u003cli\u003eSight Glass – Easy fluid level inspection without removal\u003c\/li\u003e\n\u003cli\u003eDirect Bolt-On Fit – Replaces factory cover using OEM mounting points\u003c\/li\u003e\n\u003cli\u003ePremium OS Giken Quality – Trusted in motorsport for reliability and performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable width=\"100%\" cellspacing=\"0\" cellpadding=\"8\" border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMZ191-HCR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eOS Giken\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHigh-grade aluminum alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eNatural aluminum with machined fins\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity Increase\u003c\/td\u003e\n\u003ctd\u003eExpanded over stock (exact volume varies by application)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFeatures\u003c\/td\u003e\n\u003ctd\u003eMagnetic drain plug, fluid level sight glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePosition\u003c\/td\u003e\n\u003ctd\u003eRear Differential Cover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003e2016+ Mazda MX-5 Miata (ND)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eOS Giken Limited Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003eApprox. 6.8 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eWhats Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eOne OS Giken Expanded Capacity Rear Differential Cover\u003c\/li\u003e\n\u003cli\u003eMagnetic drain plug\u003c\/li\u003e\n\u003cli\u003eFluid level sight glass\u003c\/li\u003e\n\u003cli\u003eAll necessary mounting hardware and gasket\u003c\/li\u003e\n\u003cli\u003eInstallation instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eDirect replacement for factory rear diff cover on ND Miata\u003c\/li\u003e\n\u003cli\u003eIncreased capacity helps maintain optimal fluid temps during extended high-RPM use\u003c\/li\u003e\n\u003cli\u003eMagnetic plug and sight glass make maintenance easier and more effective\u003c\/li\u003e\n\u003cli\u003eIdeal for autocross, track days, spirited street driving, or modified power levels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eEstimated time: 30-60 minutes\u003c\/li\u003e\n\u003cli\u003eDrain fluid, remove stock cover, clean mating surface, install new cover with included gasket\u003c\/li\u003e\n\u003cli\u003eRefill with recommended diff fluid (quantity increased due to extra capacity)\u003c\/li\u003e\n\u003cli\u003eProfessional installation recommended if unsure\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable cellspacing=\"0\" cellpadding=\"8\" border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2016+\u003c\/td\u003e\n\u003ctd\u003eMazda\u003c\/td\u003e\n\u003ctd\u003eMX-5 Miata (ND)\u003c\/td\u003e\n\u003ctd\u003eAll trims and transmissions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eWhy Choose OS Giken Differential Cover?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eExpanded capacity for better cooling during demanding driving\u003c\/li\u003e\n\u003cli\u003ePremium aluminum construction with heat-dissipating fins\u003c\/li\u003e\n\u003cli\u003eMagnetic plug and sight glass for easy maintenance and protection\u003c\/li\u003e\n\u003cli\u003eOS Giken motorsport heritage – trusted in high-performance applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Will this fit my 2020 Mazda Miata ND2? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, direct fit for all 2016+ ND Miata models regardless of trim or transmission.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e How much extra fluid capacity does it add? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Increased over stock (exact amount varies; typically 0.3-0.5 liters more).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Is any modification required? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, bolt-on replacement using factory mounting points.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eShipping and Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e UPS \/ FedEx Ground\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In stock ships same or next business day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Secure protective packaging\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Approx. 6.8 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OS Giken","offers":[{"title":"Default Title","offer_id":44537592709199,"sku":"OSGMZ191-HCR","price":620.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/os_giken_diff_cover.png?v=1772640699","url":"https:\/\/www.blackopsautoworks.com\/products\/os-giken-2016-mazda-miata-mx-5-nd-expanded-capacity-rear-differential-cover","provider":"Black Ops Auto Works","version":"1.0","type":"link"}