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For Your Every Summer RSVP, with Code: SUMMER15
Description
1973-1987 GM K Series Cummins Conversion Kit GF-GMK3-KITOur 73 87 GM Truck K Series Cummins Kit is comprised of many of the items needed for your Cummins diesel engine conversion. It includes a transmission adapter and flexplate to mate a TH400, 700R4, or 4L80E transmission to a 6BT Cummins engine.? Our Cummins bolt in 2" drop engine crossmember (or K Member) allows for proper engine placement and provides chassis strength to accommodate the added torque of the Cummins! Fits Truck Model Years: 73 87. Fits
Our 73-87 GM Truck K Series Cummins Kit is comprised of many of the items needed for your Cummins diesel engine conversion. It includes a transmission adapter and flexplate to mate a TH400, 700R4, or 4L80E transmission to a 6BT Cummins engine.? Our Cummins bolt-in 2" drop engine crossmember (or K Member) allows for proper engine placement and provides chassis strength to accommodate the added torque of the Cummins!
- Fits Truck Model Years: 73-87.
- Fits Engine Years: 89-02.
- Fits Transmissions: Chevrolet TH400, 700R4, 4L80E.
- This kit is comprised of some of our most popular items for your 73-87 Chevy K Series Cummins conversion.
- The Kit includes:
- GF-C-S - Adapter and Flexplate-? The 5.9 Cummins to Chevy Adapter Plate and Flexplate Kit accommodates 2002 and earlier Cummins 6BT engines bolting to a Chevy automatic transmission such as a TH400, 700R4, 4L80E, or similar transmission.
- >GF-GMDC - Cummins 6BT to Chevy Drop Crossmember-? This 2" drop crossmember allows proper engine placement and often eliminates the need for a lift kit when installing a Cummins 6BT into a 73-87 Chevy 4WD truck.
- GF-C-MM - Motor Mount- When installing a Cummins 6BT into your 1973-1987 Chevy pickup, this conversion motor mount allows for proper placement of the engine directly to the OEM frame mount isolators. When used in conjunction with a G Force GF-GMDC Drop Crossmember on 4WD models, you can retain OEM drivetrain height. Without our GF-GMDC Drop Crossmember a vehicle body lift is required.
- GF-BoltKitAdapter - Adapter Bolt Kit,? Premium grade bellhousing adapter bolt kits to make mounting the adapter plate to engine as simple as possible. Set of 9 bolts.
- GF-BoltKitFP?- Flexplate Bolt Kit, -Flexplate bolts for mounting your Cummins 6BT to a GM Bellhousing. 12mm x 1.25. 25mm underhead length. Set of 8 bolts
- GF-BoltKitStarter - Starter Bolt Kit - Steel, zinc plated bolts constructed to strict engineering quality standards and serve as direct replacement bolts for replacing the Cummins 6BT starter. Set of 4 bolts with 3 washers
Note: This kit ships in two boxes.
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1975-1986 | Chevrolet | K10 Suburban | |
| 1975-1976 | GMC | K15 | |
| 1975-1986 | Chevrolet | K20 | |
| 1973-1974 | Chevrolet | K20 Pickup | |
| 1975-1986 | Chevrolet | K20 Suburban | |
| 1975-1978 | GMC | K25 | |
| 1973-1974 | GMC | K25/K2500 Pickup | |
| 1979-1984 | GMC | K2500 | |
| 1977-1986 | Chevrolet | K30 | |
| 1973-1974 | Chevrolet | K30 Pickup | |
| 1977-1978 | GMC | K35 | |
| 1979-1984 | GMC | K3500 | |
| 1987 | Chevrolet | V10 | |
| 1987-1988 | Chevrolet | V10 Suburban | |
| 1989-1991 | Chevrolet | V1500 Suburban | |
| 1987 | Chevrolet | V20 | |
| 1987-1988 | Chevrolet | V20 Suburban | |
| 1989-1991 | Chevrolet | V2500 Suburban | |
| 1987 | Chevrolet | V30 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Effective and versatile
Color: Tinted, Size: 1.7 Fl Oz (Pack of 1)
An excellent product which goes on smoothly and can be used as a base for foundation or alone
This is a great sunscreen which smooths and protects my skin. It never becomes heavy or greasy and it protects my skin while improving it.
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Great for Sensitive Skin
Color: Non-Tinted, Size: 1.7 Fl Oz (Pack of 1)
My face has always been sensitive to sunscreens, so I have to be careful with what I use on my face. (Others can cause burning sensations). This sunscreen is great. I had no issues, and unlike other sunscreens, sweat running didn't cause my eyes to burn or water which was great.
Keeps my skin protected against the hot Florida sun, so it works!
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Reviewed in the United States on May 31, 2026
★★★★★ 3
And the crowd goes mild
Color: Tinted, Size: 1.7 Fl Oz (Pack of 1)
I had heard such great things but I’m really left a little disappointed. I got the light tinted version, and it’s much darker than anticipated. And the smell is not great. It kind of smells like my grandpa’s trailer and not in a nice, nostalgic way. As a sunscreen though, I have no complaints. The protection is great and at the end of the day that’s what I really need out of this.
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Reviewed in the United States on June 2, 2026
★★★★★ 5
Instant relief and moisturized skin well!
Size: 3 Ounce (Pack of 1), Style: Cool Down Lotion
We used the Sun Bum Cool Down Aloe Vera Lotion after getting a little too much sun on vacation, and it worked so well. It gave instant cooling relief without any sticky or greasy feeling. The lotion absorbed quickly and actually soothed the burn instead of just sitting on top of the skin like some aloe gels do.
The smell is light and tropical—really pleasant and not overpowering. After applying it a couple of times, our skin felt way less hot and tight, and it definitely helped prevent peeling. We’ll absolutely be bringing this with us on every beach trip from now on!
Highly recommend if you’re looking for a sunburn solution that actually works and feels good to use.
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Reviewed in the United States on July 11, 2025
★★★★★ 5
Sun Bum Cool Down After Sun Lotion
Size: 8 Ounce (Pack of 1), Style: Cool Down Lotion
I would give this more stars if I could!
As someone who spends as much time as possible soaking up the sun during the summer, I’ve found a true gem in Sun Bum’s Cool Down After Sun Lotion. This product has become my go-to for post-sun care, and it’s easy to see why—it’s like gold for sun-exposed skin! With its fantastic tropical scent, skin-loving formula, and high ratings on the Yuka app for its all-natural ingredients, this lotion is a standout. Here’s a detailed look at why I highly recommend it for anyone who loves summer adventures.
Ingredients and Yuka Rating
One of the standout features of Sun Bum’s Cool Down After Sun Lotion is its commitment to clean, natural ingredients, which has earned it excellent reviews on the Yuka app. According to the product description, it’s formulated with soothing aloe vera, vitamin E, and coconut oil, all of which work together to hydrate and nourish sun-exposed skin. These ingredients are free from harmful chemicals like parabens, sulfates, and dyes, making it a safe choice for those prioritizing non-toxic skincare. The Yuka app, known for analyzing product safety, rates this lotion highly for its clean, natural composition, which aligns perfectly with my preference for products that are good for both my skin and the environment. This clean formula gives me peace of mind, knowing I’m not applying anything harsh after a long day in the sun.
Scent and Sensory Experience
The scent of this lotion is nothing short of phenomenal—it truly smells like summer in a bottle! The tropical, coconut-adjacent fragrance is light and refreshing, evoking the feeling of a beach vacation. Unlike some overpowering or artificial-smelling products, Sun Bum’s scent is gentle yet nostalgic, making the application process a delight. It’s not just about function; this lotion elevates the entire post-sun care routine with its inviting aroma, which lingers subtly on the skin without being overwhelming.
Performance and Skin Benefits
When it comes to performance, Sun Bum Cool Down After Sun Lotion delivers exceptional results. After hours of playing in the sun—whether swimming, hiking, or lounging on the beach—my skin often feels dry, tight, or slightly irritated. This lotion instantly soothes and cools, providing immediate relief. The lightweight, non-greasy formula absorbs quickly, leaving no sticky residue, which is a huge plus compared to some heavier after-sun products I’ve tried. My skin drinks it up, feeling soft, hydrated, and revitalized after each use. The inclusion of aloe vera helps calm any redness or mild sunburn, while coconut oil and vitamin E lock in moisture, preventing peeling and keeping my skin smooth. I’ve noticed it helps maintain my summer glow without the flakiness that can come from sun exposure.
Texture and Application
The texture of this lotion is a perfect balance—not too thick like a heavy cream, but not runny like some gels. It has a smooth, serum-like consistency that glides onto the skin effortlessly and absorbs in seconds. I appreciate how a little goes a long way, making the 8-ounce bottle last through many applications. For an extra cooling effect, I sometimes store it in the fridge, which feels incredibly refreshing on warm, sun-kissed skin. The lotion applies evenly, and I’ve used it on both my body and face without any issues, even on my sensitive skin.
Durability and Practicality
I’ve been using this lotion consistently throughout the summer, and it’s held up beautifully as part of my daily post-sun routine. The bottle is sturdy and travel-friendly, fitting easily into my beach bag or backpack. While Sun Bum notes that shipping to certain areas like Hawaii or Alaska may be restricted due to alcohol content, I’ve had no issues purchasing it locally or online for mainland use. The formula remains effective even after multiple uses in a single day, and I’ve never experienced any separation or change in texture, which speaks to its quality.
Comparison to Other After-Sun Products
Compared to other after-sun lotions I’ve tried, Sun Bum’s Cool Down stands out for its lightweight feel and natural ingredients. Many gels can feel tacky or sticky, and some creams are too heavy for summer use, but this lotion strikes the perfect balance. Its Yuka-approved clean formula also sets it apart from competitors that may contain questionable chemicals. While some after-sun products focus solely on cooling, Sun Bum’s inclusion of nourishing ingredients like vitamin E and coconut oil makes it a more comprehensive solution for skin recovery.
Pros
Clean Ingredients: High Yuka rating for all-natural, non-toxic formula with aloe vera, vitamin E, and coconut oil.
Fantastic Scent: Tropical, coconut-like fragrance that smells like summer without being overpowering.
Lightweight and Non-Greasy: Absorbs quickly, leaving skin soft and hydrated without stickiness.
Soothing and Hydrating: Calms redness, prevents peeling, and restores moisture after sun exposure.
Versatile: Suitable for face and body, great for sensitive skin, and effective for mild sunburns.
Travel-Friendly: Sturdy bottle perfect for beach bags or travel.
Cons
Price Point: Slightly more expensive than drugstore alternatives, but worth it for the quality and clean ingredients.
Conclusion
Sun Bum Cool Down After Sun Lotion is a must-have for anyone who loves spending time in the sun. Its clean, natural ingredients, delightful tropical scent, and lightweight, hydrating formula make it a standout in post-sun care. My skin absolutely loves it, and the high Yuka rating gives me confidence that I’m using a product that’s good for me and the environment. Whether you’re recovering from a beach day or just need to soothe sun-exposed skin, this lotion delivers on every front. It’s become an essential part of my summer routine, and I highly recommend it to anyone looking for a reliable, skin-loving after-sun product.
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Reviewed in the United States on July 2, 2025
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