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SKU: MG183EA
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- Description
- Fitment
- Warranty and Refund
- Reviews
Keep your cooling system sealed tight with the Motorad MG183EA thermostat seal. Molded from rubber in a grooved O-ring design, this seal is engineered to OEM specifications to help ensure an accurate fit against the thermostat housing, resisting the heat and chemical exposure that coolant systems generate. With an inside diameter of 1.62 in (41.15 mm), outside diameter of 1.88 in (47.75 mm), and thickness of 0.237 in (6.02 mm), the MG183EA is dimensionally matched for a precise seal that supports long-term durability. This part fits a wide range of applications spanning 1980-2003, including Subaru Justy, Buick Century, Electra, LeSabre, Park Avenue, Reatta, Regal, Riviera, Skylark, and Somerset, plus Chevrolet Astro and other GM platforms. Backed by Motorad's OEM-focused design philosophy, this seal is a straightforward, budget-friendly way to restore a proper coolant seal during thermostat service or replacement.
Features
- Rubber O-ring construction is formulated to withstand engine coolant exposure and sustained heat cycling.
- Grooved OEM design supports accurate seating against the thermostat housing for a dependable seal.
- Precise dimensions (1.62 in ID x 1.88 in OD x 0.237 in thick) help ensure a correct fit.
- Compact single-pack unit simplifies ordering exactly what's needed for a thermostat reseal job.
- Cross-references to NAPA 1077 and AETM 27273 help identify equivalent parts when sourcing.
Application Summary
1980-1981 Chevrolet Monte Carlo 3.8L 3800CC 231CID V6 OHV 12 Valve Turbocharged GAS1985 Buick Somerset Regal 3.0L -CC 181CID V6 OHV 12 Valve Naturally Aspirated GAS
1986, 1988-1990 Buick Electra 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1986-1987 Buick Somerset 3.0L -CC 181CID V6 OHV 12 Valve Naturally Aspirated GAS
1986-1987 Oldsmobile Toronado 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1986-1987, 1990-1996, 1999 Buick Regal 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1986-1987, 1991-1993 Buick Riviera 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1986-1988 Buick Century 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1986-1988 Buick Skylark 3.0L -CC 181CID V6 OHV 12 Valve Naturally Aspirated GAS
1986-2005 Buick LeSabre 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1987 Buick Electra 5.0L -CC 307CID V8 OHV 16 Valve Naturally Aspirated GAS
1987-1988, 1992-2005 Pontiac Bonneville 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1987-1991 Subaru Justy 1.2L 1189CC -CID L3 SOHC 9 Valve Naturally Aspirated GAS
1988, 1991 Oldsmobile Delta 88 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1988-1991 Buick Reatta 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1989 Pontiac Firebird 2.8L -CC 173CID V6 OHV 12 Valve Naturally Aspirated GAS
1989, 1991-1993 Buick Skylark 3.3L -CC 204CID V6 OHV 12 Valve Naturally Aspirated GAS
1989-1993 Buick Century 3.3L -CC 204CID V6 OHV 12 Valve Naturally Aspirated GAS
1990 Buick Skylark 2.5L 2474CC 151CID L4 OHV 8 Valve Naturally Aspirated GAS
1991-2005 Buick Park Avenue 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1992-1993 Pontiac Grand Am 3.3L -CC 204CID V6 OHV 12 Valve Naturally Aspirated GAS
1992-1993, 1995-1999 Oldsmobile 88 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1992-1994 Chevrolet S10 Blazer 4.3L -CC 262CID V6 OHV 12 Valve Naturally Aspirated GAS
1992-1994 GMC Sonoma 4.3L -CC 262CID V6 OHV 12 Valve Naturally Aspirated GAS
1992-1994 Oldsmobile Bravada 4.3L -CC 262CID V6 OHV 12 Valve Naturally Aspirated GAS
1992-1995 Chevrolet Astro 4.3L -CC 262CID V6 OHV 12 Valve Naturally Aspirated GAS
1992-1995 Chevrolet Lumina APV 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1992-1995 GMC Jimmy 4.3L -CC 262CID V6 OHV 12 Valve Naturally Aspirated GAS
1992-1995 GMC Safari 4.3L -CC 262CID V6 OHV 12 Valve Naturally Aspirated GAS
1992-1995 Oldsmobile Silhouette 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1992-1995 Pontiac Trans Sport 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1992-1996 Oldsmobile 98 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1994-1995 Chevrolet S10 4.3L -CC 262CID V6 OHV 12 Valve Naturally Aspirated GAS
1995 Chevrolet Blazer 4.3L -CC 262CID V6 OHV 12 Valve Naturally Aspirated GAS
1995-1999 Buick Riviera 3.8L 3800CC 231CID V6 OHV 12 Valve Supercharged GAS
1995-2002 Chevrolet Camaro 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1995-2002 Pontiac Firebird 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1996-1998 Oldsmobile LSS 3.8L 3800CC 231CID V6 OHV 12 Valve Supercharged GAS
1997-1998 Oldsmobile Regency 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1997-1998, 2000-2004 Buick Regal 3.8L 3800CC 231CID V6 OHV 12 Valve Supercharged GAS
1997-2007 Pontiac Grand Prix 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1998 Chevrolet Lumina 3.1L -CC 189CID V6 OHV 12 Valve Naturally Aspirated GAS
1998 Chevrolet Monte Carlo 3.1L -CC 189CID V6 OHV 12 Valve Naturally Aspirated GAS
1998-1999 Oldsmobile Intrigue 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1999 Chevrolet Lumina 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1999 Chevrolet Monte Carlo 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1999 Oldsmobile LSS 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
2000-2005 Chevrolet Impala 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
2000-2005 Chevrolet Monte Carlo 3.4L -CC 207CID V6 OHV 12 Valve Naturally Aspirated GAS
2005-2007 Buick Allure 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
2005-2007, 2009 Buick LaCrosse 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
2006-2007 Buick Lucerne 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
2008 Buick Allure 5.3L 5328CC 325CID V8 OHV 16 Valve Naturally Aspirated GAS
2008 Buick LaCrosse 3.6L 3564CC 217CID V6 DOHC 24 Valve Naturally Aspirated GAS
2008 Buick Lucerne 4.6L -CC 281CID V8 DOHC 32 Valve Naturally Aspirated GAS
2008 Pontiac Grand Prix 5.3L 5328CC 325CID V8 OHV 16 Valve Naturally Aspirated GAS
Part Numbers: MG183EA
Specifications
- Brand: Motorad
- Part Number: MG183EA
- Part Type: Engine Coolant Thermostat Seal
- UPC: 055644908342
- GTIN: 00055644908342
- Package Dimensions: 13.2 x 12.2 x 3.5 IN
- Package Weight: 0.7 LB
- Package Quantity: EA
Returns
30-Day Money-Back Guarantee
We want you to be completely satisfied with your purchase! If you are not happy for any reason, you may return the item within 30 days for a refund, minus shipping fees, provided that: The part is brand new, uninstalled, and undamaged in any way.
To initiate a return, please contact us or email support@mizumoauto.com for a Return Authorization Number (RMA) and the return shipping address. Returns without an RMA number will be refused and returned to you at your expense.
Return Requirements:
- Items must be securely packed in the original manufacturer's packaging.
- All original materials must be included, such as hardware, manuals, protective caps, wrapping, and instructions.
- You must obtain and retain the tracking number for your return.
Non-Returnable Items:
- Piston rings, main bearings, and rod bearings are non-returnable if the manufacturer’s seal or shrink-wrapped plastic has been opened. No exceptions—this ensures the integrity of the parts you receive.
We are not responsible for lost or damaged returns. If your return is lost or damaged during shipping, a refund cannot be issued, as the item cannot be resold or returned to the supplier. Please file a claim directly with your shipping carrier for reimbursement.
Refunds are processed within 1-2 business days after we receive and inspect the returned item. Please allow this processing time before inquiring about your refund status.
Warranty
Mizumo Auto provides a 90-day Limited Warranty against defects in workmanship and materials under normal service conditions, effective from the original delivery date.
This warranty is non-transferable and applies only to the original purchaser. Coverage is limited to the replacement or refund of defective products.
Exclusions:
The warranty does not cover labor costs, damage resulting from accidents, misuse, alterations, or unauthorized modifications, as well as additional expenses such as towing, fluids, oils, car rentals, and any other parts not included in the original purchase.
Warranty Claims Process:
- All warranty claims must be pre-authorized and returned prepaid to Mizumo Auto for inspection and approval.
- No exchanges will be made for products that have been damaged, misused, or improperly installed. We strongly recommend professional installation.
- The buyer assumes all risk of damage resulting from improper installation.
All disputes related to transactions shall be resolved by a court of competent jurisdiction in Los Angeles County, California.
Shipping
We offer Free UPS Ground or USPS Ground Advantage shipping within the continental U.S. (48 states).
Shipping to Other Locations:
A delivery surcharge applies to shipments to: Alaska, Hawaii, Puerto Rico, U.S. territories, APO/FPO addresses, Canada, and international destinations.
Order Processing & Tracking:
- Orders are shipped Monday through Friday, excluding holidays.
- Orders placed before 3:00 PM PST will ship the same day, unless unexpected delays occur.
- A tracking number will be emailed within one business day after shipping.
If you do not receive a tracking number, please:
- Check your spam/junk folder.
- If it's not there, contact us via phone or eBay message for assistance.
International Orders:
Import duties, taxes, and brokerage fees are not included in the shipping fee. Please check with your shipping carrier and local customs office regarding any applicable fees before placing your order.