Product Description

The Dometic 421 Platinum Low Profile RV Toilet is the newest premium addition to Dometic's revolutionary 420 Platinum Series, delivering residential comfort in a compact, low-profile design. Featuring a luxurious elongated porcelain bowl, soft-close seat, and powerful 360° PowerFlush technology, the 421 Platinum is the ideal upgrade for RV owners who need a lower seat height without sacrificing comfort or performance.

With a 13-1/2" seat height, the 421 Platinum is designed for RVs with raised bathroom floors, limited vertical clearance, or owners who simply prefer a lower-profile toilet. Despite its compact height, it still provides the comfort of a full residential elongated seat while fitting into a wide variety of RV bathrooms. The 421 Platinum also features Dometic's industry-leading 7-5/8" minimum rough-in and universal 2-bolt mounting system, making it one of the easiest premium replacement toilets available.

Features & Benefits

• Genuine Dometic OEM RV toilet
• New Platinum Series premium design
• Low-profile 13-1/2" seat height
• Premium vitreous porcelain elongated bowl
• Residential-size elongated soft-close seat
• Hygienic dual-action foot pedal flush
• Powerful 360° PowerFlush bowl rinse for superior cleaning
• Redesigned flush ball and seal for improved odor protection
• Quiet gravity-flush operation
• Durable glass-reinforced water valve
• Universal 2-bolt floor mounting
• Compact rear profile fits more RV bathrooms
• Easy-to-clean high-gloss porcelain finish
• DIY-friendly replacement components

Specifications

• Manufacturer: Dometic
• Part Number: 9610008283
• Series: 421 Platinum
• Color: White
• Installation Type: Permanent
• Flush Type: Gravity Flush
• Flush Control: Foot Pedal
• Seat Shape: Elongated
• Seat Height: 13-1/2"
• Overall Dimensions: 13-3/4" H × 15" W × 19" D
• Bowl Material: Premium Vitreous Porcelain
• Seat Material: Polypropylene Soft-Close
• Hand Sprayer: Not Included
• Mounting System: Universal 2-Bolt
• Minimum Rough-In: 7-5/8" (8" recommended)

Why Choose the 421 Platinum?

The 421 Platinum is designed for RV owners who want premium residential comfort while maintaining a lower overall toilet height.

Compared to many traditional low-profile RV toilets, the 421 Platinum offers:

• Premium porcelain construction
• Comfortable elongated residential seat
• Soft-close lid
• Powerful 360° PowerFlush technology
• Improved bowl rinsing with reduced water usage
• Modern styling
• Easier cleaning and maintenance
• Compact footprint without sacrificing comfort

Universal Replacement Upgrade

The Dometic 421 Platinum is designed to replace many existing RV toilets, including numerous Dometic and competitor models.

Its universal installation features include:

• Universal 2-bolt mounting pattern
• Industry-leading 7-5/8" minimum rough-in
• Compact rear profile
• Gravity-flush design compatible with most RV plumbing systems

Whether you're replacing an older Dometic toilet or upgrading from another manufacturer, the 421 Platinum offers one of the easiest premium replacement solutions available.

What's Included

• Dometic 421 Platinum Low Profile Toilet
• Soft-close elongated seat and lid
• Mounting hardware
• Installation instructions

Hand sprayer not included.

Frequently Asked Questions

What is the difference between the 420 Platinum and the 421 Platinum?

The primary difference is the seat height.

• 420 Platinum: Standard chair-height seating (approximately 18")
• 421 Platinum: Low-profile 13-1/2" seat height

Both models feature the same premium elongated porcelain bowl, soft-close seat, 360° PowerFlush system, compact rear profile, and universal installation.

Is this a porcelain toilet?

Yes. The 421 Platinum features a premium vitreous porcelain bowl that resists stains, scratches, and odors while providing a true residential feel.

Does this toilet have a soft-close seat?

Yes. The included elongated polypropylene seat and lid feature a soft-close design to prevent slamming.

Does this model include a hand sprayer?

No. Part number 9610008283 does not include a hand sprayer.

Will this replace my existing RV toilet?

In many cases, yes. The universal 2-bolt mounting system and 7-5/8" minimum rough-in make the 421 Platinum compatible with a wide variety of existing RV toilets. Always verify your rough-in measurement before ordering.

Why Buy from RVToiletParts.com?

At RVToiletParts.com, RV toilets are all we do. We specialize exclusively in RV toilets and replacement parts, providing expert guidance to help you select the right replacement the first time. Whether you're upgrading an older Dometic model or replacing another brand, you can count on knowledgeable support and genuine OEM products.